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.
P0401 : EGR Flow Insufficient on 1996 Toyota Corolla
Hi Folks Any suggestions for P0401 EGR Flow Insufficient for 1996 Toyota Corolla? Tks, bonnie*
1996 Toyota Corolla | P0401P0725 Fault Diagnosis and Repair for 2000 Dodge Dakota - Engine Speed Input Circuit Malfunction
I'm experiencing a P0725 engine speed input circuit malfunction in my 2000 Dodge Dakota. Can anyone provide insight into what this code means and how to diagnose or fix it? The ...
2000 Dodge Dakota | P0725Saturn Vehicle P0122 and P0133 Diagnostic Guide: Fix for Rough Idle and Oxygen Sensor Issues
I've identified what the OBD2 codes P0122 and P0133 mean, but I'm still unsure how to resolve them. After replacing the Throttle Position Sensor (TPS) last summer due to high id...
Saturn | P0122P0304 Error in 1999 Honda CR-V: Causes, Fixes, and Valve Adjustment Advice
The check engine light is on and the vehicle has triggered error code P0304. I've already replaced the spark plugs, ignition wires, distributor cap, rotor, and fuel filter. Afte...
1999 Honda CR-V | P03041997 Mercury Cougar P0430, P0171, P0174 OBD-II Codes: Engine Stalls on Start, Fuel Trim Issues
I own a 1997 Mercury Cougar and am experiencing persistent OBD-II diagnostic trouble codes: P0430 (catalyst system efficiency below threshold), P0171 (system too lean), and P017...
OSD-II | P017197 Mazda 626 4-Cylinder Automatic: P0708 OBD II Code - Transmission Range Sensor Circuit High Input Diagnosis and Fixes
I own a 1997 Mazda 626 with a 4-cylinder automatic transmission (CD4E), currently at approximately 221,000 miles. The vehicle has undergone a previous transmission replacement a...
97 Mazda 626 | P0708Mazda 626 1996 P0171 and P1744 Fault: Oxygen Sensor & Torque Converter Clutch Solenoid Issues
Hi everyone, I recently purchased a used 1996 Mazda 626 LX (2.2L) with approximately 86,070 miles and an automatic transmission. Over the past year, I've driven only about 4,00...
mazda | P0171DTC P1762 in 1997 Ford Explorer 4.0L 4X4: Vehicle Dies in Drive, Runs in Reverse or Neutral
Hello. My friend has a 1997 Ford Explorer 4.0L 4x4. Last night, while driving, the truck suddenly died. It starts fine but immediately shuts off when placed into Drive. The vehi...
1997 Ford Explorer 4.0L | P17622000 Toyota Camry OBD Code P0401 and P0402: EGR Flow Issues and Rough Idling Solutions
My 2000 Toyota Camry is showing OBD codes P0401 (EGR Insufficient Flow) and P0402 (EGR Excessive Flow). The vehicle exhibits rough idling, loss of power, sputtering, and increas...
2000 Toyota Camry | P04201998 Chevrolet Trans AM O2 Sensor Fault Codes P0131, P0137, P0151, P0157 - Possible Cause After Air Check Valve Replacement
Hello everyone! I recently purchased a 1998 Chevrolet Trans AM Firebird and am experiencing multiple O2 sensor fault codes: P0131, P0137, P0151, and P0157. These codes began ap...
1998 Trans AM | P01311996 Toyota Camry P0304 Misfire: Vibration, Stalling & Burning Smell - Solutions & Next Steps
Hi, I own a 1996 Toyota Camry with a V6 engine, 140,000 miles, automatic transmission. Over the past two weeks, I've been experiencing a recurring issue: when slowing down at t...
1996 Toyota Camry | P0304P0300 Misfire Diagnosis and Coil Pack Issues in 2002 Honda Civic LX
My friend's 2002 Honda Civic LX (1.8L, 5-speed manual, 200,000 miles) experiences engine stalling when the clutch is pressed early in the morning while driving up a small hill o...
2002 Honda Civic | P030296 Ford Taurus 3.0L Idle Issues: P0401, P0325, and P1519 Diagnosis & Solutions
I own a 1996 Ford Taurus 3.0L LX DOHC engine that is exhibiting persistent idle problems accompanied by error codes P0401 (Exhaust Gas Recirculation System Flow Malfunction), P0...
96 ford Taurus | P03252001 Ram 0300, 0306, 0308 Diagnostic Help - Multiple Cylinder Misfire Codes
I'm experiencing persistent misfire codes (0300, 0306, 0308) on my 2001 Ram. I've already replaced the spark plugs and ignition cables, as well as the distributor cap, but the i...
01 RAM | P03002001 Jeep Grand Cherokee P1762 Code: Causes and Fixes for Automatic Transmission Governor Pressure Sensor
I'm experiencing the P1762 diagnostic code on my 2001 Jeep Grand Cherokee, and I'd like to know the correct solution. Can anyone provide detailed information about what causes t...
2001 Jeep Grand Cherokee | P1762P0420 Fault Diagnosis for 1997 Toyota Camry with 138,000 Miles
Hello. My check engine light came on recently, so I purchased a code reader to diagnose the issue. The device detected a P0420 fault code. Here's some background: I bought this ...
1997 Toyota Camry | P04202001 Honda Odyssey OBD-II Fault Codes P0780 and P1750 - What Do They Mean?
I've detected two OBD-II diagnostic codes on my 2001 Honda Odyssey: P0780 and P1750. I'm unable to find detailed information about these specific codes online. Can anyone provid...
2001 Honda Odyssey | P07801998 Chrysler Breeze P0294 Fault: Cylinder 12 Injector Circuit Low - Diagnosis Tips
DTC P0294 indicates a low voltage circuit in the injector for Cylinder 12. This diagnostic trouble code is commonly found in 1998 Chrysler Breeze vehicles. While the code appear...
1998 Breeze | P0294P0303 Misfire Diagnosis and Repair for 2002 Chevrolet Tahoe - Fuel Injector or Ignition System?
I'm experiencing a persistent P0303 diagnostic code on my 2002 Chevrolet Tahoe, indicating a misfire in cylinder 3. I've already replaced the spark plugs, plug wires, and the de...
2002 Tahoe | P0303Practical 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.