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.
2000 Chevrolet Blazer P0134 and P1133 Error Codes: O2 Sensor Fix Guide
I recently purchased a 2000 Chevrolet Blazer with approximately 60-70 miles on the odometer. After driving it briefly, two diagnostic error codes appeared: P0134 and P1130. The ...
2000 chevrolet blazer | P0134P0420 Diagnostic and Fix for 2002 Chevrolet Silverado 1500 V6 4.3L with OBD2 Service Engine Soon Light
Trouble Code: P042-20 on a 2002 Chevrolet Silverado 1500 (V6, 4.3L, 262ci, F1 MFI gasoline OHV). The check engine light activated the day after completing maintenance work, incl...
02 SILVERADO | P0420P0021 Fault Code Explanation for 2005 Ford F-150 5.4L VCT System
The Variable Valve Control (VCT) system on a 2005 Ford F-150 5.4L V8 engine is not a single component but a complex system that uses oil pressure and solenoids to adjust valve t...
2005 F-150 5.4L | P0021P1506 OBD2 Code Diagnosis and Idle Issues in 2003 Mercury Sable
I'm new to this forum, but I'm experiencing a persistent issue with my 2003 Mercury Sable. After using an OBD2 scanner, I received a P1506 code, which prompted me to replace the...
2003 Mercury Sable | P15062002 Chevrolet Silverado P0141 and P0160 O2 Sensor Bank 1 & 2 No Activity - After Replacing All Sensors
My OBDII code reader is showing two fault codes: P0141 (O2 Sensor Bank 1 Sensor 2 - Heater Performance) and P0160 (O2 Sensor Bank 2 Sensor 2 - Circuit Insufficient Activity). I ...
2002 chevrolet silverado | P01412004 Chevrolet Impala P0122: Throttle Pedal Position Sensor Low Input Issue After Multiple Repairs
Good morning, I'm experiencing a persistent issue with my 2004 Chevrolet Impala, which has triggered a trouble code P0122 — 'Throttle/Pedal Position Sensor/Switch A Circuit Low...
2004 Impala | P01222001 Ford Ranger P0453 and P0446 EVAP System Faults - Diagnosis and Repair Guide
I own a 2001 Ford Ranger with the 4.0L engine, and I'm currently encountering two EVAP system fault codes: P0453 (EVAP system pressure sensor high) and P0446 (EVAP system vent c...
2001 4.0 Ford Ranger | P04461998 Chevrolet Suburban 5.7L P1345 Code: Camshaft to Crankshaft Position Sensor Fault and Secondary Air Injection Issue
Hello, I own a 1998 Chevrolet Suburban with a 5.7L engine that continues to display a persistent service engine light that will not turn off. After replacing the EGR valve, dist...
1998 Suburban | P13452002 Jeep Grand Cherokee Laredo 4.0L - P0351 Code After Coil Pack and Plug Replacement
My 2002 Jeep Grand Cherokee Laredo with a 4.0L engine originally showed codes P0302, P0305, and P0306. I replaced the coil pack and spark plugs (Champion copper core), which res...
2002 Jeep Grand Cherokee Laredo | P0351P1123 Fault Code Explanation for 2000 Hyundai Accent
What does the P1123 fault code mean for a 2000 Hyundai Accent? The P1123 diagnostic trouble code indicates that the Throttle Position Sensor (TPS) is reading a position within i...
Hyundai Accent 2000 | P1123P0106 Diagnostic and Fix for 2009 Chevrolet Malibu - MAP Sensor Issue
I'm looking for guidance on how to diagnose and fix the P0106 fault code in my 2009 Chevrolet Malibu. The vehicle is showing a DTC P0106, which indicates a Manifold Absolute Pre...
2009 chevy malibu | P01062003 Dodge SX 2.0L Engine P0016 and P0340 Error Codes - No Spark, Won't Start After CPS Replacement
I own a 2003 Dodge SX with a 2.0L engine and 2L automatic transmission. The vehicle has exceeded 200,000 kilometers. While driving home, it began sputtering, lost power, and eve...
2003 Dodge SX | P00162006 Hummer H3 P2101, P2176, and P1516 Codes: Causes, Troubleshooting, and Repair Guidance
I own a 2006 Hummer H3 that has been displaying three OBD-II diagnostic trouble codes: P2101 (Throttle Actuator Circuit Malfunction), P2176 (Fuel Trim 2 Too Rich), and P1516 (Co...
2006 Hummer H3 | P1516P0172 Code on 2005 Chevrolet Cavalier: Rich Mix, Hard Start, and Lack of Power - Diagnosis and Fixes
My 2005 Chevrolet Cavalier started showing a P0172 code (fuel system too rich on bank one) about two weeks ago. The car now has difficulty starting—only when the accelerator is ...
2005 Cavalier | P01722011 Tahoe P2135 Error Code Meaning and Diagnosis
I own a 2011 Chevrolet Tahoe and recently received a diagnostic code P2135. What does this error code mean, and how can I troubleshoot it? The code indicates a Throttle/Pedal Po...
2011 Tahoe | P21352008 Kia Sportage P0171 Oxygen Sensor Issue: How to Identify the Baseline Sensor and Diagnose System Too Lean
Is there a way to determine which oxygen sensor is the baseline (bas) sensor in a 2008 Kia Sportage when encountering DTC P0171? The code P0171 indicates 'System Too Lean,' whic...
2008 Kia Sportage | P01712004 Kia Sedona, p0431, p0122
Replaced tp sensor last August after registering a p0122. Weather got colder (frequently below zero), van seemed to be sluggish on acceleration, thought it was the cold weather ...
2004 Kia Sedona | P01222000 Dodge Dakota 4.7L Engine Misfire: P0203, P0206, P0208, P0306, P0308 and P0300 Codes Explained
I'm experiencing multiple engine misfire codes on my 2000 Dodge Dakota 4.7L: P0203, P0206, P-0208, P0306, P0308, P0300, and P0303. The vehicle runs smoothly for about 10 to 20 m...
2000 DODGE DAKOTA 4.7 | P02032004 Dodge Ram 1500 4.7L Engine P0344 Cam Sensor & P0302 Cylinder 2 Misfire Issue
I'm experiencing two diagnostic trouble codes on my 2004 Dodge Ram 1500 with a 4.7L engine: P0344 (Interruption in camshaft position sensor circuit) and P0302 (cylinder 2 misfir...
2004 Ram 1500 | P0302Practical 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.