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.
1998 Ford Taurus SE P0401 Code: Causes, Fixes, and Safety Concerns After Accident
I was involved in a low-speed collision about five months ago while turning left. The only visible damage was a broken right headlight and a dent in that area. Since then, my ch...
1998 Ford Taurus SE | P04012007 Chevrolet TrailBlazer P1400 Code: Cold Start Emission Control System Fault
I'm experiencing a Powertrain Diagnostic Trouble Code (DTC) P1400 on my 2007 Chevrolet TrailBlazer with a 4.2L 6-cylinder engine. The vehicle shows no dashboard warnings, and th...
blazer | P1400P0443 Diagnostic and Repair Guide for 1997 Mercury Grand Marquis with 4.6L V8 Engine
Hello. I own a 1997 Mercury Grand Marquis equipped with a 4.6L V8 engine, currently at 259,154 miles. The P0443 trouble code has been present for approximately four years — sinc...
1997 Grand Marquis | P0443P0446 Evap Vent Valve Circuit Malfunction - 1997 Nissan Sentra GXE Repair Guide
I own a 1997 Nissan Sentra GXE and am experiencing a P0446 fault code indicating an evaporation vent valve circuit malfunction. The vent valve is located near the fuel tank behi...
97 Sentra GXE | P04462003 Hyundai Santa Fe Rough Idle and Misfire: P0300, P0302, P0304, P0306 Codes - No Power, Stalls After Rain
I have a 2003 Hyundai Santa Fe with a 3.7L V6 engine and all-wheel drive. While driving today, the vehicle suddenly became gutless—idle is rough, and it lacks power. Using an OB...
Santa Fe | P0300P0135 Fault on 1997 Ford Ranger 4.0L 4x4: Diagnosis and Fix Guide
Hello everyone! I'm experiencing a P0135 diagnostic code on my 1997 Ford Ranger with the 4.0L engine and 4x4 drivetrain. Recently, I completed a head gasket repair and replaced ...
97 Ranger | P0135P0442 Diagnostic and Performance Issues on 2003 Jeep Cherokee Laredo
Hello, I own a 2003 Jeep Cherokee Laredo with a 4.0L engine and am currently experiencing a P0442 diagnostic trouble code. In addition, when accelerating, my vehicle feels slugg...
2003 Jeep Cherokee | P04422000 Acura Integra Type R P1337 and P0500: MPH Gauge Malfunction, VTEC Failure, and Engine Power Issues
Vehicle: 2000 Acura Integra Type R Modifications: Stock setup — original engine and transmission, no modifications Fault Codes: P1337 (Crankshaft Position Sensor) and P0500 (Veh...
2000 Acura Integra Type R | P0500P1758 Fault Code in 2003 Saturn Vue with 2.2L L2.2 Engine and CVT-E25 Transmission
I'm looking for information about the P1758 diagnostic trouble code in my 2003 Saturn Vue (manufactured by General Motors), equipped with a 2.2L L2.2 engine and an automatic CVT...
Satur 2003 VVUE | P1758P0171 to p0172 2003 trailblazer 4x4 6 cyl
So any ideas ??? Thanks
2003 Trailblazer 4x4 6 cyl | P01711997 Chevrolet Z28 P1441 OBD-II Code: Evaporative Emission System Fault After Purge Solenoid Replacement
I recently purchased a 1997 Chevrolet Z28 and discovered a P144-1 diagnostic trouble code. I replaced the gas cap, but the code returned within a few days. Subsequently, I repla...
1997 z28 | P14412002 Dodge Ram 1500 5.7L - P0320 Code After Replacing Crankshaft and Camshaft Position Sensors
I own a 2002 Dodge Ram 1500 with a 5.7L engine. Recently, the vehicle died unexpectedly and I scanned it and found fault code P0320 (Crankshaft Position Sensor A Circuit Malfunc...
2002 dodge ram | P03202001 Ford F-150 4.2L V6 - OBD2 P0171 & P0174 Codes: Lean Mixtures, Low Idle, Knocking After MAF Replacement
My 2001 Ford F-150 2WD with a 4.2L V6 engine and 5-speed manual transmission has developed check engine light issues. The OBD2 diagnostic tool returned both P0171 (System Too Le...
2001 F-150 | P0171P0420 and P0430 Codes on 2002 Toyota RAV4: How to Fix for Smog Check at Low Cost
I'm trying to pass a California smog check on my 2002 Toyota RAV4, but the check engine light is on due to both P0420 and P0430 diagnostic codes. While the vehicle passes emissi...
2002 Rav4 | 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.