P1780 code chevy. e. This video explains how to permanently fix the P0700 Transmission Malfunction error code. Therefore, it’s crucial to have insights about them to avoid issues such as slow acceleration, reduced fuel economy, and even loss of control. and approximate cost 1997 - 2006 Expedition & Navigator - P1780 code - trans ctrl switch??? - I have been having an intermittent problem with my Navigator that has acted like a bad plug or coil. Nov 12, 2024 路 The P1780 code often happens due to a bad transmission control switch, damaged wiring, or problems with the transmission control module (TCM). Customer: 2002 Ford Focus has code P1780 Transmission control switch out of self test range. The PNP switch, also known as the transmission range sensor, is responsible for detecting the gear position of the vehicle. Learn what Park/Neutral Position Switch Malfunction means, location and how to repair. The check engine light is on. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Understanding the implications of this code and how to address it is crucial for vehicle owners and DIY I scanned my 99 ranger with 5r55e trans and received trouble code P1780 transmission control switch circuit out of A P1780 code indicates a faulty neutral safety switch or related wiring issues. The switch or the wiring could be the problem. It is typically found in vehicles with automatic transmissions. I replaced the throttle body completely and that didn't work. Inspect the transmission range sensor and its alignment, as misalignment triggers errors. 馃専 Understanding the P1780 Engine Error Code The P1780 error code refers to a Transmission Control Switch (TCS) Malfunction. COMMON TROUBLE CODES What is a Diagnostic Trouble Code (DTC)? DG Technologies diagnostic tools, such as the VSI NxGen, and the DPA XL, can be used to extract fault codes from a vehicle’s network. Thinking of erasing the code and see if it returns. Understanding this code’s meaning, causes, symptoms, and potential solutions can help vehicle owners effectively diagnose and resolve issues related to their transmission system. If the test was properly performed and the P1780 still exists the module did not see a change in state in the circuit, indicating a circuit, switch or module failure Codes P1703 and P1780 indicate the brake switch and transmission control switch signals are out of expected range. If the code persists, inspect the transmission range sensor wiring harness for damage or corrosion. I would take it to a reputable transmission shop to get a compete diagnose to see if there is faulty wiring or sensor out of range. The PNP switch, also known as the transmission range sensor, is responsible for indicating the position of the gear selector (Park, Neutral, Drive, Reverse) to the vehicle's computer system. It all points to the transmission anti slip regulation and transmission control out of range. The TCM monitors the state of the transmission control switch to determine I have a 1999 chevy suburban that has a service engine soon light on. There may be slight changes depending on the year/model of vehicle, you would need to consult a factory service manual for specifics. For example, code p1780 in your Ford can indicate that something is wrong. This switch basically tells the engine control computer what gear you have the car in. This code is commonly associated with various transmission issues, particularly in automatic vehicles. The circuit is not operating within expected parameters during Nov 27, 2024 路 The P1780 trouble code is a diagnostic trouble code (DTC) that indicates a malfunction in the transmission control switch circuit. com/p1780 How to fix a Chevy or GMC P0700 Code: Malfunction with Transmission Control Module (TCM). comContent blocked Please turn off your ad blocker. 2016 Ford F150 XLT 5. obd-codes. The code sets when it recieves conflicting signals from the switch, such as being in park and reverse at the same time. 2 v-6 , I am getting a code P1780 Trans OD out of self test, I had the engine rebuilt am getting this code. 5 v6. Also, check transmission fluid level Jun 21, 2022 路 DTC P1780 code: Park Neutral Position Switch Circuit (BUICK, CADILLAC, CHEVROLET, GMC) Transmission Control Switch Circuit is Out of Self-Test Range (FORD, LINCOLN, MAZDA, MERCURY) Push-Pull Sensor (HYUNDAI) Transmission Control Module Ignition Advance Circuit Malfunction (KIA) Park/Neutral Position Switch Malfunction (LEXUS, TOYOTA). And, how would you like to connect with the Mechanic - phone call or online chat? The P1780 code on a 2000 Ford Ranger indicates a transmission control system issue, often linked to the Transmission Range Sensor (TRS). Throwing P1780 and the low maf circuit code. Description, diagnostic and repair information for Chevrolet OBD2-OBDII engine codes | Page 1 | Engine-Codes. May 11, 2022 路 What does Code P0172 mean? Can I drive with it? What are the causes and symptoms? How do I fix code P0172? Know the answers! Error Code P1780 is defined as Transmission Control Switch Circuit is Out of Self-Test Range. P1780 diagnostic trouble code details. If the code returns after doing the Specialities include: Acura, Agriculture and Farm Equipment, Audi, BMW, Buick, Cadillac, Car, Car Electronics, Car Parts, Chevrolet, Chevy, Chrysler, Classic Car, Construction and Road Equipment, Dodge, eBay Motors, Firearms, Fish and Wildlife Service, Fishing and Hunting, Ford, Fresh Water Fishing, GM, GMC, Heavy Equipment, Honda, Hybrid and This is one of the most frequent OBD2 trouble codes. Jan 3, 2025 路 The P1780 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the transmission control switch, specifically that it is out of the self-test range. Sep 6, 2024 路 The P1780 Ford code indicates that the Transmission Control Switch Circuit is out of self-test range. Another Transmission Code Decoded: DTC P1700 Transmission Intermediate Failure How To Diagnose And Fix Possible Causes The transmission control switch is a component related to electronic automatic transmissions that come in the form of Customer: 02 camry 2. I got error code p1703 (Brake Switch out of read codes range) and p1780 Repair Information for P1780 Toyota code. 4L automatic I have a 1997 ford f150 and it's showing these codes P0113 ,P0102 ,P1127 ,P1780 ,P1116 Read less 1 Likes Feb 25, 2025 路 When your Chevy vehicle experiences an engine issue, your onboard diagnostics system generates diagnostic trouble codes (DTCs) that point to specific problems. What does the P1780 engine code mean? P1780 refers to a Transmission Range Sensor Circuit Malfunction, indicating a problem with the sensor that determines the gear position (e. Occasionally goes in limp mode. 0. Definition When P0172 is detected, it means that the exhaust system is too rich in bank one. Aug 25, 2024 路 The P0178 Chevrolet code indicates a problem with the Fuel Composition Sensor Circuit, specifically a low frequency signal being detected. Read the full article below to know what it means, how to fix it, and what other codes may show related to it. Understanding what that is and whether it’s a severe issue can help you resolve it Get code P1780 Transmission Control Switch Circuit is Out of Self-Test Range troubleshooting tips, code P1780 troubleshooting help, code P1780 diagnostics and code P1780 technical information from TRNW. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles. P1780. This can cause improper brake light operation or shifting problems. All P1780 questions answered by experts Did your car register P0172? Learn the meaning, causes, symptoms, diagnostics mistakes, and how to diagnose and fix the problem. Even after replacement, check the switch’s connector for corrosion or loose pins causing intermittent signals. It’s crucial to understand what the code means, what causes it, which car models it affects the most, and how to diagnose, fix, and prevent it. com Google We would like to show you a description here but the site won’t allow us. When the P1780 code is triggered, it signifies that the vehicle’s powertrain control module (PCM) has detected a problem with the transmission control switch I've got a 2013 F150 FX 3. How to fix the O D OFF button and solve a P1780 code on your Ford Truck briansmobile1 465K subscribers Subscribe The Park/Neutral Position (PNP) switch detects the shift lever position and sends signals to the ECM. The P1780 code for Cadillac indicates a problem with the Park Neutral Position (PNP) switch circuit. Transmission slipping combined with tow/haul light flashing suggests the TCS is forcing tow/haul mode to protect the transmission. A complete transmission flush removes old, contaminated fluid and debris that can cause solenoid sticking or valve malfunction. Learn what Engine Torque Signal Circuit means, location and how to repair. This can impact fuel economy and drivability. In the last 6 months I have had the vehicle in the dealer for repairs 4 times. Make: Chevrolet Code: P1780 Definition: Park Neutral Position Switch Circuit Malfunction Description: Engine started, vehicle driven to over 50 mph at an engine speed from 2000-4000 rpm, MAP sensor indicating more than 300 mmHg, and the PCM detected the P/N switch indicated Neutral for 30 seconds or two different P/N switch signals at the same Feb 4, 2025 路 The P1780 code is commonly associated with various symptoms, including delayed or rough shifting, slipping of the transmission, and illumination of the check engine light. The first digit indicates where it is a generic code or a manufacturer specific code. Here is a guide about the meaning, causes and fix for this code. The Ford Mechanic can help with your code P1780 issue on your 2013 Ford F-150 Lariat. What is that mean? He said that's the only one code p1780. I'm a retired mechanic and performed the test myself. Learn what Transmission Control Switch Out of Self-Test Range means, location and how to repair. Symptoms include harsh or delayed gear changes and possible limp mode activation. This is something that should be left to a technician to determine, it could be JohnOk, P1780 for Chevrolet is typically a code for the Park/Neutral switch, the switch that tells the computer what gear the transmission is in. Any suggestions? Aug 1, 2020 路 Repair Information for P1780 Toyota code. 7 powerstroke deleted and tuned I started having a super hard jerk when downshifting from 5th to 4th I hooked up a scan tool and got this code P1780 Trans Control Switch (O/D Cancel) Out of Self-Test Range Any help will be appreciated Codes P1780 and P1703 indicate transmission shift solenoid or control module faults. , park, neutral, drive). It been acting up for the Customer: I just have the P1780 code on my navigator 99. Maybe related to front daylight beam going out or rear one of the wires for the license plate is messed up. com OBDII GM Code Definitions. Associated symptoms include blowing the 10 AMP fuse for the gauges, power windows, heater-AC blower. Read the article to know possible causes, symptoms, and descriptions. Test the switch with a multimeter, clean connectors, and replace if defective. Learn more about his background. I am wondering if this is a major problem or just a lose wire. This was the only code present on both tests. Inspect the TCS for faulty contacts or wiring issues causing erratic signals. Car shut off on its own while driving, tries to start but won't in park towed the car Mar 12, 2025 路 Chevrolet Manufacturer-specific Fault Codes are unique identifiers created by Chevrolet to diagnose issues within their vehicles. Foreign vehicles may also use DTC codes different from the generic Engine Diagnostic codes. This error indicates an issue with the communication or functionality Apr 19, 2009 路 ABout 86000 miles on the car, get a P1780 failure code. To fix it, start by checking if the control switch is working properly and sending the right signals to the ECM. About four months ago, my niece couldn't get the shifter to move even with her foot on the brake so I sawed the tip off I have a 2005 escape showing a p1780 code Mechanic's Assistant chat Customer: I have a 2005 escape showing a p1780 code Answered by Randall J in 1 hour 11 years ago What do I do about code p1780. Online chat. The P1780 code indicates the transmission control switch is out of range, often caused by a misaligned or faulty transmission range sensor (TRS). Learn what Park Neutral Position Switch Circuit means, location and how to repair. error code p1780. Could it be this or something else? Learn about the P1780 failure code for the 2000 Toyota Camry, its common causes like wiring issues at the trunk hinge, and effective repair tips at RepairPal. The P1780 code indicates a transmission shift solenoid malfunction causing hard shifts and noise. My car the whole time is in low power mode. P- Powertrain). See relevant content for fixtroublecodes. It wasn't just an indicator of P/N position switch malfunction. It been acting up for the Jul 6, 2009 路 I have 1997 Ford F 150 4. Customer: 1998 Toyota Tacoma and the p1780 check engine code came on. The second digit indicates the subsystem ( 3rd 4runner 4th 4wd 5th 6th air back battery belt black brake bumper car codes control door engine find fluid front fuel gen good head issue it’s i’m kit lift light lights limited manual miles mount oem oil part parts power pump rack rear replace replaced seat sensor shop side start steering stock storage suspension switch system time tire Dec 7, 2022 路 Many codes can be seen in your Ford vehicle. This means that the transmission control module (TCM) is unable to successfully complete its self-test for the transmission control switch, which is a critical component in the vehicle's transmission system. The ECM receives signals (NSW, R, 2 and L) from the park/neutral position switch. Whats Mar 1, 2025 路 I have a 2017 f250 6. P0016 - Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A P0030 - Heated My transmission on my 2009 Honda Pilot isn't functioning properly. Mar 24, 2004 路 1997 - 2006 Expedition & Navigator - P1780 code - trans ctrl switch??? - I have been having an intermittent problem with my Navigator that has acted like a bad plug or coil. 5 ecoboost. This code may be accompanied by P0175, which monitors bank two. I have codes P0421, P1779, P1780 again. So, erase the code and retest. Not sure what it is. During the KOER the switch needs to be cycled during the test. Chevrolet P1780 Jan 11, 2020 路 I'm on my 3rd neutral safety switch and they all throw the same code (P1780 Transmission Park/Neutral Position Fault) with the same symptoms. Symptoms include intermittent starting failures despite normal running periods. Repair Information for P1781 Chevrolet code. Some scan tools also give a Transmission Control System (MIL Request) Chevy GMC P0700 Possible Causes Low Nov 5, 2012 路 If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. Code : P1780 Make : CHEVROLET Description : P1780 CHEVROLET Park Neutral Position Switch Circuit Possible causes : – Faulty Park Neutral Position Switch – Park Neutral Position Switch harness is open or shorted – Park Neutral Position Switch circuit poor electrical connection Solutions : – Carry out a Reset via CarDiag – Choose a better quality fuel – Check that the tank cap is Oct 30, 2024 路 Wondering how to fix the P1860 code fast? Discover essential steps to diagnose and resolve it quickly and effectively. g. The P1780 diagnostic trouble code indicates that the Transmission Control Switch (TCS) is out of the self-test range. I know what the code means, and have seen a few potential problem in forums online. Cracking the P1780 Ford Code: Learn symptoms, fixes & expert advice for a smoother drive. . 4 code p1780 Mechanic's Assistant: Any other details you'd like to add? Customer: no Customer: Noticed the P1780 code a week ago and haven't driven the vehicle since then. Replaced the More than just a list of Chevy Check Engine Light Codes! Our resources can help you fix your check engine light now! Informative articles, technician advice, component tests, wiring help and more! El establecimiento del código de diagnóstico P1780 significa que el PCM encontró fallas en el circuito del TCS/TCSL. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to verify that the issue has been resolved. Models: (01-05 Chevrolet Silverado) and (01-05 GMC Sierra) and ( 03-05 Chevrolet Kodiak) and (03-05 GMC Top Kick) #01-06-04-020 Service Engine Soon Indicator Lamp On, DTC P1781 Set (Reprogram Engine Control Module) Mar 11, 2012 路 A P1780 code is generated when the PCM/TCM does not see a change in state in the TCS/Overdrive Cancel/Tow Haul switch during the KOER test, [Key On Engine Running]. The P1780 code is set when the transmission control module (TCM) detects an abnormal voltage or resistance in the transmission control switch circuit. Start by checking the transmission fluid level and condition. These diagnostic trouble codes are codes that are stored by the on-board computer diagnostic system. Includes symptoms for reference as well as tips on how to fix it. The letter of an OBDII code identifies the location of the fault code (i. My mechanic says hes getting codes P1743 and P1780 Code P1780 indicates a problem with the neutral safety switch or transmission range sensor. Inspect the TRS located on the transmission housing for damage or loose connections. Whether you drive a Chevy Silverado, Camaro, or Malibu, this guide will help you interpret these codes and take appropriate action Jan 29, 2021 路 Codes P1780 and P1705 indicate transmission control module (TCM) issues causing limp mode and gear disengagement. P1780 engine code provides below are generic codes that may not apply to all vehicles. 8T with triptronic trans. Nov 19, 2017 路 Thread Tools Rate Thread Display Modes Tags 4runner , dash , ect , p1780 , tacoma « Previous Thread | Next Thread » P1780 what is the fix?are you having trouble with the transmission not working correctly . If get it moving and shift from low range to neutral and then back to drive it will reset. HI, Ok, when you do the key on engine running test for codes, while turning the steering wheel back and forth all the way, pump the brake pedal and if equipped with O/D, turn the O/D button on and off- do all this for 5 seconds. won't start, code P1780 engine was misfiring. com/p1780 Aug 1, 2020 路 Repair Information for P1780 Ford code. Car manufacturer uses specific P1780 DTC code that are different from the codes shown below. My mechanic said it showing P1780 code . 2002 vue accelerator problem p0700 p1779 p1780 After 2 blocks stopped at stop sign. Be sure to double check the codes. We would like to show you a description here but the site won’t allow us. Customer: 02 1. Don't remember at the moment. We explain what causes the problem, symptoms and then top 5 fixes. The P1780 code indicates a transmission shift solenoid malfunction preventing gear changes beyond first gear. Repair Information for P1780 code. Code P1780 indicates a Transmission Control Switch (TCS) malfunction. Customer: How do you fix the Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit From the code P1780?? I have a 2000 Saturn LS Discover more answers escape: I have a 2005 escape showing a p1780 code I have a P1780 code and a P0703 code, could one of these be causing the other? 2001 Ford F-150 5. The activation of the P1780 diagnostic code indicates issues with a car’s transmission control switch and overdrive function. This sensor is responsible for measuring the ethanol content in the fuel being used by the vehicle. Learn what Transmission Control Switch Circuit is Out of Self-Test Range means, location and how to repair. If you dont have acess to a OBD-II scanner to check your "check engine light" most of your local auto parts will scan your system for FREE. This means that there is a malfunction in the communication between the engine control module (ECM) and the transmission control module (TCM) regarding the engine torque output. Repair Information for P1780 Chevrolet code. Meaning When the engine is operating correctly, there is a precise balance Feb 2, 2020 路 OVERVIEW A diagnostic trouble code (DTC) is made up of 5 characters- 1 letter followed by 4 digits. The P1780 code for Toyota vehicles indicates a Park/Neutral Position (PNP) switch malfunction. Ford DTC Code P1780 Meaning: Transmission Control Switch Circuit Out of Self Test Range What’s Wrong: The transmission control switch is not changing states. Understanding these codes is key to maintaining engine health and keeping your vehicle running smoothly. This means that there is a problem with the transmission control switch, which is responsible for controlling various functions related to the transmission system. Nov 20, 2008 路 Below is a full list of GM OBD-II Diagnostic Trouble Codes. The vehicle lacks reverse, neutral, 5th, or 6th gear functionality, though gears 1-4 are operating correctly. The TCS is a crucial component of the vehicle's transmission system, responsible for controlling the transmission's shift points and performance. what is the best way to resolve? - Answered by a verified Chevy Mechanic Jan 7, 2023 路 A guide explaining what the P1000 code is and how to fix a car with this code. Its more likely the switch but its best to have it checked May 31, 2022 路 The P1682 code is defined as "Driver 5 Line 2" in General Motors vehicles. Put a scan tool on it pick up 3 codes p0722 P1780 and P061A vehicle. Mar 9, 2012 路 So had this weird engine code pop up on my truck. If the PNP switch is faulty, replace it with a new one following the manufacturer's guidelines. Start by testing shift solenoids A and B for electrical continuity and proper operation. We have videos to explain auto engine codes and their repairing methods as well as auto-saving videos to help you save money along the way. 2000 Chevy Tahoe code p1780 on scanner for transmission slipping what does this really mean and could it just need - Chevrolet 2000 Tahoe question Code P1781 Chevrolet Description The P1781 code in a Chevrolet indicates an issue with the engine torque signal circuit. Symptoms include improper downshifting or no response when pressing the OD (overdrive) button. Click to read more! Code P1780 indicates a transmission pressure control solenoid malfunction. The P1780 code indicates a faulty Transmission Control Switch (TCS) affecting shift timing. This video is to show you the cause of the P1780 engine Jul 14, 2017 路 What are the symptoms of code P1780? Symptoms associated with code P1780 may include a transmission that will no go into or come out of overdrive, an inoperative TCS indicator lamp and an illuminated check engine light. Code P1780 indicates a transmission control system fault, often linked to the transmission range sensor or shift solenoid. 0 P1780 Code: Transmission Control Switch Issues Ranger 4. Code P1780 stands for Transmission Control Switch Out of Self-Test Range. Please help me I need my car. Jul 3, 2023 路 The P1780 code is a transmission control switch circuit code that can cause problems with your car’s transmission. Start by checking the transmission fluid level and condition; low or dirty fluid can cause pressure issues. comCode: P1780 Title: Transmission Control Switch Circuit is Out of Self-Test Range Explanation: This code indicates an issue with the transmission control switch circuit, which is responsible for monitoring and managing manual override functions (such as Overdrive cancel). what do i need to fix my car Nov 8, 2007 路 A p1780 is a code for the neutral safety switch that is mounted on the tansmission. If you dont cycle the O/D switch on and off, you get the code P1780. Need Help with the Code? Get the P1380 Chevrolet code diagnosed by a professional: Find a repair shop in your area About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Search Results for P1780 OBDII Trouble Code | Engine-Codes. This code is primarily associated with automatic transmission systems and can affect vehicle performance significantly. 2000 camry 4 cylinder Customer: how to fix a 2011 transit connect xlt a transmission control switch o/d cancel circuit out of read code range . So I replaced the vapor canister purge valve still nothing. Jan 30, 2010 路 A side note Code P1780 was a pre-2003 diagnostic code. looking for a transmission cintrol switch for a 2001 L300 v6. Inspect the shift solenoid pack for wear or electrical faults. The switch may be out of adjustment, have a poor connection or has failed. OBDII Chevrolet Code Definitions. Ford F-150 2006 truck, P1780, Transmission control switch O/D cancel circuit out of self test range. It could also mean a gear position range malfunction or fault. code p1780 Mechanic's Assistant: Just to clarify, what's the exact code? The P1780 code for a 2000 Ford F150 indicates that the transmission control switch is out of self-test range. What does that mean Jan 12, 2004 路 About 6 hours after my airbags were installed and I dragged a few times I was just driving normally down the road and my service engine soon light came on The P1780 error code is typically related to a malfunction in the Transmission Range (TR) sensor or transmission control circuit. Test the PNP switch using a multimeter to ensure it is functioning properly. Codes P1779 and P1780 indicate transmission pressure control solenoid or valve body problems. Started to accelerate car lost power P2195-p2157-p1780 codes came up are they all related. now won't start at all - Chevrolet 1998 S-10 Pickup question Nov 23, 2022 路 The P1780 is a manufacturer-specific trouble code common in most Ford vehicles. Has 3. I recieved the fault code P1780. Apr 12, 2023 路 OBD code P1780 is a generic powertrain code that is related to the transmission control switch circuit. 0 often faces delayed shifting and transmission slipping related to the control switch. I got the car scanned before I changed anything I got the codes u0107, p0700, p1780, p0455. When the code is triggered in your Ford, it could result from an issue with your Transmission Control Switch. When the signal is not sent to the ECM from the park/neutral position switch, the ECM judges that the shift lever is in D position. Specialities include: Acura, Buick, Cadillac, Car, Car Electronics, Chevy, Chrysler, Classic Car, Dodge, Ford, GMC, Honda, Jeep, Kia, Lexus, Lincoln, Mazda, Mercury Customer: 2008 sable p1780 code using KOER test. Begin troubleshooting by inspecting the TRS wiring and connector for corrosion or damage. After replacing the switch, ensure proper alignment and secure electrical connections. Reset the ECU by disconnecting the battery for at least 15 minutes. Jan 29, 2025 路 小ódigo de Falla p1780 Chevrolet en Español Problemas y soluciones del código p1780 para los modelos populares de Chevrolet: Malibu, Impala, Camaro, Corvette, Cruze, Sonic, Spark, Aveo, Cobalt, Equinox, Tahoe, Suburban, Traverse, Trax, Blazer, Colorado, Silverado, HHR, Volt, Bolt EV. Learn what Park/Neutral Position Switch Malfunction means, location and how to repair? Make: Ford Code: P1780 Definition: Transmission Control Switch (O/D Cancel) Circuit Out Of Self Test Range Description: Oct 9, 2017 路 iRV2 Forums > THE CHASSIS CLUB FORUMS > Ford Motorhome Chassis Forum Code P1703 and P1780 iRV2. ASR light lit solid and shifts hard. Ford Ranger 4. Each code carries its meaning and risk. In other words, it might mean there's no reliable indication of **any** gear position, not just Park and Neutral. The P/N switch is involved in 'signalling' all the gear positions, but the wires involved for The OBD-II DTC codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn. Did some searching and came up with the problem of "trans neutral Switch". When I push it thru gas it' s seem to do some noise on the trans or tranfer very hard and the motor misfire and dont acelerate. Try also: https://www. I'm disabled that's the only way I can get around. Customer: have code p1780 on my diagnostics. zcbsouy frnhez qlwtkf zavptx mmdlgpw npib glcjsop jzy kyp qxahig