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.
DTC B0100 Front Airbag Sensor 1 Performance Issue - 2006 Corvette After Front Collision
Hi, I own a 2006 Chevrolet Corvette and am currently experiencing DTC B0100 — indicating a performance issue with the front airbag sensor 1. This problem arose after I purchased...
2006 corvette | B01001996 Cadillac Fleetwood 5.7L LT1 - Persistent P0335 and P0336 Codes After Water Pump Replacement and Engine Tuning
I recently replaced the leaking water pump and performed a full engine tune-up, including cap, rotor, wires, and plugs. Now I'm experiencing a check engine light with recurring ...
1996 cadillac fleetwood 5.7L Lt1 | P03352003 GM Tracker P0102 Fault: MAF Sensor Issue with Black Smoke and No Signal
I own a 2003 GM Tracker with a 2.5L V6 engine. The vehicle is throwing Diagnostic Trouble Code (DTC) P0102, indicating a malfunction in the Mass Airflow (MAF) sensor. Despite re...
Tracker | P01022003 Nissan Sentra 2.5L OBD II P0340 Camshaft Position Sensor Fault: Diagnosis and Repair Guide
I'm experiencing a recurring OBD II Diagnostic Code P034
2003 Nissan Sentra 2.5L | P0340Peugeot 206 RC/GTI 180 P0137 Fault: O2 Sensor Replacement Not Resolving Code
Hi everyone, I own a Peugeot 206 RC/GTI 180 (registration plate year 2006). A few weeks ago, the Malfunction Indicator Lamp (MIL) turned on, and after checking with an OBD-II sc...
Peugeot 206 RC/GTI 180 | P0137GMC TERRAIN OBD2 Fault Codes P0050 P0152 P0154 P0155 - What Do They Mean and Is It Safe to Drive?
Hi everyone, My GMC TERRAIN is showing a check engine light when I scanned it using an OBD2 tool. The system has detected four fault codes: P0050, P0152, P0154, and P0155. I've...
GMC TERRAIN | P0050Toyota 2002 Echo P0171 Misfire Diagnosis: Fixed After Injector Replacement, How Long for CEL to Clear?
My 2002 Toyota Echo is showing a P0171 fault code (Rich Air-Fuel Mixture - Bank 1). I've already replaced the air filter and mass airflow sensor (MAF), reset the Check Engine Li...
Toyota 2002 Echo | P01711996 Isuzu Trooper OBD2 P0133 Code: Causes and Solutions After O2 Sensor Replacement
I replaced the oxygen sensor on my 1996 Isuzu Trooper, but the P0133 code has returned. Any suggestions for what else to check or troubleshoot? The issue persists even after the...
1996 Isuzu Trooper | P0133Saturn Vue P0303 Misfire on Cylinder 3: Causes and Diagnosis Guide
I recently replaced the spark plugs and ignition wires on my Saturn Vue, but the vehicle still shows a misfire on cylinder 3 (code P0303). I'm trying to determine whether the is...
Saturn Vue | P0303Chevrolet Captiva 2.0D (C20DM) 2007 - Fault Codes P0047 and P0045 Causing Turbo Cut-Out
Hi, I'm Jarle from Norway. I recently purchased a 2007 Chevrolet Captiva with engine code C20DM (2.0D). After approximately 3 to 4 months of ownership, I've started experiencing...
Chevrolet Captiva | P00452003 Nissan Altima P0506, P0171, and P017-4 Codes: Diagnosis and Solutions
I'm seeking advice from experienced mechanics regarding a recurring issue on my 2003 Nissan Altima. The check engine light activated, and the following diagnostic codes appeared...
2003 Nissan Altima | P01712001 Chevrolet Impala 3.8L P0420 Fault: Converter Below Threshold Despite CAT Ready Status
Hi, I'm experiencing a check engine light on my 2001 Chevrolet Impala with the 3.8L engine, showing a DTC P0420 indicating 'Catalyst System Efficiency Below Threshold'. The vehi...
2001 chevy impala | P04201998 BMW 740iL Stuck in Reverse Only: Fault Codes P0733 and P0720 Explained
Hi everyone, My 1998 BMW 740iL has suddenly stopped moving forward in Drive and is now only able to move backward in Reverse. This behavior started gradually, with the car beco...
1998 BMW 740iL | P0720P0172, P0174, and P0175 Codes on 2004 Chrysler Concorde 3.5L Engine After MAP Sensor Replacement
Hi everyone, I'm currently troubleshooting persistent OBD2 trouble codes: P0172 (Rich Mix Bank 2), P0174 (Rich Mix Bank 2), and P0175 (Rich Mix Bank 3) on my 2004 Chrysler Conco...
Unknown | P0172P0132 O2 Sensor Fault in 2004 Dodge Ram 1500 with 5.7L Hemi Engine
I own a 2004 Dodge Ram 1500 equipped with a 5.7L Hemi engine and am currently experiencing a P0132 diagnostic trouble code, which indicates a high voltage issue with the oxygen ...
2004 Dodge 1500 | P0132P0303 Fault in 1998 Dodge Ram 1500 5.9L 4x4: Diagnosis and Repair Steps
I recently replaced the spark plugs, wires, distributor cap, and the front O2 sensor (the rear one was replaced a few years ago). The P0303 misfire code started appearing only a...
98 Dodge Ram 1500 5.9 4x4 | P03031996 Toyota Tercel P0401 and P0402 Fault: EGR System Issues and Diagnosis
I own a 1996 Toyota Tercel with a 1.5L EFI DOHC 4-cylinder engine. The vehicle recently triggered the check engine light, displaying fault codes P0401 and P0402. While driving, ...
1996 Toyota Tercel | P0401Practical 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.