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.
2008 Ford Expedition 5.4L P0012 Fault: Did a Computer Reset Really Fix It?
I recently drove my 2008 Ford Expedition with a 5.4L engine (56,000 miles) approximately 100 miles out of town for a high school reunion. During the trip, it ran fine, but when ...
2008 Ford Expedition | P00121998 Mercury Mystique Fault Codes P0404 and P0401: Diagnosis and Repair Steps
I own a 1998 Mercury Mystique that recently triggered diagnostic trouble code P0404. I replaced both the EGR valve and the DPFE sensor, but the issue has now shifted to code P04...
1998 Mercury Mystique | P04012010 Chevrolet Tahoe ABS Code C0161: Causes and Repair Solutions
I'm looking for guidance on how to diagnose and fix the ABS code C016 or C0161 on my 2010 Chevrolet Tahoe. Both the ABS and traction control lights come on, and I want to know w...
2010 chevrolet tahoe | C01612008 PT Cruiser P0430 Code: Engine Swap Issues and Cam Sensor Replacement Advice
I own a 2008 PT Cruiser and recently performed an engine swap, replacing the original engine with a 2005 model. Despite replacing the crankshaft sensor, I still experience no sp...
2008 Pt Cruiser | P04302012 Hyundai Accent P0326 Knock Sensor Code at 65,000 Miles - Automatic Transmission Issue
Hello everyone! I'm having an issue with my 2012 Hyundai Accent at approximately 65,000 miles. The check engine light is on and the fault code displayed is P0326 — Knock Sensor ...
Huyandai Accent | P0326P0299 Fault in 2006 Ford F350 Diesel - Causes and Resolution
I recently encountered a P0299 diagnostic code on my 2006 Ford F350 diesel engine. The issue occurred only during startup, when the turbocharger was not under load (engine at id...
2006 Ford F350 Diesel | P02992002 GMC Sierra Misfire with P0300 and P0171 Codes After New Fuel Tank Installation
Installed a new fuel tank due to a failed evaporative system connection on the old tank. Attempted cleaning of the interior of the new tank, but may have introduced water or old...
2002 gmc sierra | P0171Mercedes C180K OBD2 Code P0171: Frequent Check Engine Light with Normal Driving Performance
The check engine light on my Mercedes C180K comes on repeatedly. After resetting the system, it returns within approximately 15 miles of driving. The vehicle performs well—excel...
Mercedes C180K | P0171How to Detect Airbag Deployment via OBD2 Codes in Ford and GM Pickups
Hi everyone, I'm part of a vehicle tracking company and we're looking to detect airbag deployment using OBD2 diagnostic codes. We currently collect DTCs (Diagnostic Trouble Code...
Air Bag | P2177P0171 OBD2 Diagnostic Code for Volkswagen Passat 2004
Volkswagen Passat 2004 owner experiencing OBD2 diagnostic code P0171. This code indicates a lean air-fuel mixture in the engine, which may be caused by issues such as faulty oxy...
Passat 2004 | P0171P0400 Fault in 2001 Chevrolet Cavalier: Loss of Power and Starting Issues
My 2001 Chevrolet Cavalier with a 2.2L engine suddenly lost all power while driving, as if the engine had completely shut down. I was pressing the accelerator pedal hard when th...
2001 Cavalier | P0400P0817 and B1600 Fault Codes: Causes and Fixes for Ford Transit 2000
What are the possible causes and solutions for fault codes P0817 and B1600 in a 2000 Ford Transit? Please provide detailed explanations based on vehicle-specific technical infor...
FORD TRANSIT 2000 | B16002000 Dodge Stratus P0340 Code: Can a Dirty Air Filter Cause Misfires?
Could a severely clogged air filter be responsible for the intermittent stalling and misfiring in my wife's 2000 Dodge Stratus, which subsequently triggered a P034 or P0340 engi...
2000 Dodge Stratus | P03402005 Renault Megane 1.9dci P0409 and P0670: Loss of Power Above 2000 RPM, EGR Replacement History
Hello everyone, My 2005 Renault Megane 1.9dci has recently developed a recurring issue involving the 'Service' light and an 'Injection Fault' message. The problem first appeare...
2005 Renault Megane | P04092004 Sebring Limited 2.7L Engine P0202 OBD2 Fault Code Diagnosis
I've tested the ohm resistance of the wire and it reads good. When using a test light on the positive terminal, I get a constant illumination, which suggests a ground fault in t...
2004 Sebring Limited | P02021999 Honda Civic SRS Light On - No DTCs Detected on Scan Tools
My 1999 Honda Civic has the SRS light illuminated, along with the check engine light. However, neither the SRS nor any engine-related diagnostic trouble codes (DTCs) are showing...
1999 Honda Civic | P1456P0125 Diagnostic Issue on 1999 Mitsubishi Galant GTZ 3.0L - Engine Light On After Replacement
Hello everyone, I'm currently working on my 1999 Mitsubishi Galant GTZ with a 3.0L engine and preparing it for emissions testing. Recently, the engine warning light activated, a...
Mitsubishi Galant | P01252007 Dodge Caliber P0017 Fault: Rough Idle, Stalling, and TSB 18-018-0-7A Details
I own a 2007 Dodge Caliber that has been storing only the P0017 diagnostic trouble code. The vehicle exhibits rough idle and intermittent stalling, though it runs fine at times....
Dodge Caliber | P0017Practical 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.