Traditional gasoline car fault
Search fault code and browse forum case posts.
This page is designed for quick diagnosis on gasoline vehicles by combining code lookup with real discussion cases. Enter a fault code to filter related topics, then compare symptom context such as cold start behavior, acceleration load, fuel-trim deviation, ignition misfire pattern, and recent maintenance history. Many codes can be triggered by shared root causes, so use cross-checks from multiple posts before replacing sensors, coils, injectors, or catalytic components.
1999 GMC Suburban P0305 Fault: Engine Dies, Rough Idle, Zero Compression in Cylinder 5
My wife was driving our 1999 GMC Suburban on the highway when the check engine light came on and the truck suddenly shut off. Upon arriving at the scene, both the check engine a...
99 Suburban | P03051999 VW Passat 2.8L OBD-II Codes P0455, P1136, P1138, P0441: EVAP Leak and Lean Fuel Trim Fixes
First post — I'm sharing detailed info on my 1999 VW Passat 2.8L (non-turbo) with persistent OBD-II codes: - Mileage: 127,320 miles - Detected Codes: - P0455: Evaporative Em...
1999 Passat 2.8L | P04411997 Lincoln Town Car Executive P0174 Lean Bank 2 and P0302/P0303 Misfire: What Does 'Bank 2' Mean and Where to Check for Leaks?
I own a 1997 Lincoln Town Car Executive and recently received diagnostic codes P0302 (cylinder 2 misfire), P0303 (cylinder 3 misfire), and P0174 (lean condition in Bank 2). I'm ...
unknown | P0174Ford F-150 2003 - P0171, P0174, P1131, and P1151 Diagnostic Guide
Good morning, I'm working on a 2003 Ford F-150 that is displaying the following OBD2 diagnostic codes: P0171, P0174, P1131, and P1151. These codes indicate issues with fuel mix...
03 Ford F150 | P01712000 Chrysler Grand Voyager P1294 Code: Causes and Explanation
I'm experiencing a P1294 diagnostic trouble code on my 2000 Chrysler Grand Voyager, which indicates an issue with the manufacturer-controlled fuel and air metering system. Can a...
2000 Grand Voyager | P12942000 Chrysler Eclipse P0335 and P0340 Error After Engine Swap - Same 3.0L Engine from Sebring
Hello! I recently purchased this 2000 Chrysler Eclipse, which previously had engine issues. To fix it, I replaced the original engine with a used 3.0L engine taken from a Chrysl...
2000 Eclipse | P03352003 Chevrolet Express 6.0 Engine Fault Codes P0154, P0174, P0300: Causes, Diagnosis & Fixes
I own a 2003 Chevrolet Express 6.0 with 92,000 miles. The engine malfunction light flashes only when driving over 60 mph and stops when I slow down. My OBD-II scanner shows thr...
2003 Chevrolet Express | P01541996 VW Jetta Not Starting: Codes P1225-P1228 and P1425 - Ground Short to Fuel Injectors & Tank Vent Valve
I own a 1996 Volkswagen Jetta that will not start. After replacing the ignition coil, I received diagnostic codes P1225-P1228 (ground short to fuel injectors 1-4) and P1425 (tan...
1996 VW Jetta | P1225VW 2001 New Beetle Check Engine Light: How to Fix P0322, P0304, and P1128 Codes
I own a 2001 VW New Beetle, and my check engine light came on. After visiting a parts store, I was given the following diagnostic codes: P0322 (Engine Speed Sensor Malfunction),...
VW | P0304P0129 Diagnostic and Solution for 2006 Jeep TJ with Supercharger Installation
I'm experiencing a persistent P0129 fault code on my 2006 Jeep TJ after installing a supercharger. The code appears only when starting the vehicle, and I've cleared it successfu...
06 Jeep TJ | P0129P1448 Fault in BMW E46 M3 2003: Evaporative Emission System Leak Diagnosis and Pump Replacement
My BMW E46 M3 (2003) has been showing the ECL (Evaporative Emission Control) warning light for several months. I previously took it to a BMW dealership, where they claimed the g...
BMW E46 M3 | P14482007 Dodge Caliber PO622: Alternator Not Charging Despite New Alternator and PCM Replacement
My 2007 Dodge Caliber with a 2.0-liter engine is showing fault code PO622, indicating the alternator is not charging. I have already replaced the alternator with a new one, and ...
dodge caliber | P06222005 Dodge Ram 5.7 HEMI Misfire: P0301 and P0203 Fault Codes - Diagnosis and Fixes
Help needed! My 2005 Dodge Ram 5.7L HEMI engine is running roughly and shows fault codes P0301 (cylinder 1 misfire) and P0203 (injector issue on cylinder 3). I've already replac...
2005 Dodge Ram 5.7 hemi | P0203P0135 Fault Diagnosis and Repair for 2003 GMC Sonoma V6 4.3L Engine
Looking for reliable troubleshooting steps and solutions for the P0135 OBD-II diagnostic code in a 2003 GMC Sonoma with a 4.3L V6 engine. How can this specific fault be identifi...
GMC Sonoma 2003 V6 4.3L | P01352000 Mitsubishi Eclipse: P0100 to P0107 to P0500 - Idle Issues and Diagnosis
I was driving home from my girlfriend's house when the car suddenly died. All dashboard lights came on, and power steering failed. I managed to restart it, but as soon as I shif...
2000 Mitsu Eclipse | P01002004 Nissan Maxima P0726 Code: Causes, Fixes, and Diagnostic Steps for Transmission Communication Issues
Hello everyone! I'm a new user on this forum and I'm looking for clear, accurate information about the P0726 diagnostic code that appears in my 2004 Nissan Maxima. I want to und...
2004 Nissan Maxima | P0726P0420 Fault Diagnosis for 1998 Honda Accord Coupe 4-Cylinder
I recently encountered fault code P0420 on my 1998 Honda Accord Coupe with a 4-cylinder engine. The official diagnostic page lists the coolant temperature sensor (CTS) as a pote...
1998 Honda Accord Coupe 4-cylinder | P0420Practical workflow for fault-code troubleshooting
Start by confirming battery voltage and reading freeze-frame data, then inspect wiring and connectors before replacing parts. If the code returns after clearing, record the exact driving or idling condition when it reappears. Prefer case threads with complete repair feedback, because confirmed outcomes provide stronger guidance than one-time symptom descriptions. Following a step-by-step workflow reduces repeated repairs and lowers total diagnosis time.