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.
P0420 Fault in 1999 Honda Civic LX After Distributor Replacement
I recently owned a 1999 Honda Civic LX, and about two weeks ago, my distributor failed. After the mechanic replaced it and I drove approximately 20 miles, the Check Engine Light...
99 Honda Civic LX | P04202000 Mitsubishi Montero 3.0L - Check Engine Light, Loss of Power, Backfiring with P0170 Fault Code
My 2000 Mitsubishi Montero 3.0L is coming in with a persistent check engine light, significant loss of power, and backfiring during acceleration. After scanning the vehicle, I r...
2000 Mitsubishi Montero 3.0 | P01701998 Ford F150 XLT OBD Code 1131 and 1151: Diagnosis and Solutions
The 1998 Ford F150 XLT is displaying OBD II diagnostic codes 1131 and 1151. These codes indicate issues with the engine's oxygen sensor or fuel system. Code 1131 typically point...
1998 ford 150 xlt | P1131P0303 Misfire Diagnosis on 2002 PT Cruiser with Low Cylinder 3 Compression
My 2002 PT Cruiser, with 148,000 miles, suddenly started running rough at idle. The next day, the engine lost power completely and the check engine light illuminated. A diagnost...
2002 PT Cruiser | P0303Audi A3 2007 2.0 TDI Quattro S-line P0471 Exhaust Pressure Sensor A Circuit Range Fault - How to Fix?
Hi everyone, I'm looking for reliable advice on resolving the P0471 fault code on my 2007 Audi A3 2.0 TDI Quattro S-line. The error code P0471 indicates an exhaust pressure sen...
Audi A3 | P0471P1135 Diagnostic Code in 2001 Toyota Tacoma: Causes, Solutions & Fix Steps
I own a 2001 Toyota Tacoma with a 3.4L engine and am currently encountering the P1135 error code: 'Air/Fuel Sensor Heater Circuit Response' (Bank 1 Sensor 1). This fault code in...
2001 Toyota Tacoma | P11352002 Ford Sable P1131, P0301, P0303, P0316 Misfire and Lean Fuel Code Diagnosis
Recently experienced recurring misfire issues on my 2002 Ford Sable, resulting in check engine light activation. I replaced spark plugs, ignition wires, and the coil pack, which...
2002 Sable | P0301Symptoms before P0300 code.
I have an '04 Saturn L300 with the 4 cyl engine and auto trans. The car has gradually developed an acceleration problem and lack of power. Usually driving around town or easy hi...
Unknown | P03002000 Mercury Villager P0325 and P0340 Codes: Knock Sensor and Camshaft Position Sensor Failure Symptoms
My 2000 Mercury Villager is showing two diagnostic trouble codes: P0325 (Knock Sensor Circuit Malfunction) and P0340 (Camshaft Position Sensor Circuit Malfunction). The vehicle ...
2000 Mercury Villager | P0325P0401 Diagnostic and Repair for 2000 Pontiac Bonneville 3.8L Supercharged Engine
I own a 2000 Pontiac Bonneville with a 3.8L supercharged engine that consistently displays the P0401 diagnostic code. I have already replaced both the catalytic converter and th...
2000 Pontiac Bonneville 3.8 Supercharged | P04012007 Hyundai Accent P0496 and P0328 Codes: Evaporative Emission System & Knock Sensor Issues
My 2007 Hyundai Accent GS with a 1.6L engine and manual transmission has been experiencing intermittent acceleration problems for several months. The check engine light first ap...
2007 hyundai accent | P03281997 GMC Yukon 5.7L Engine P0300 Random Misfire Code - Cold Start Hesitation Resolves After Warm-Up
Hello everyone, I recently purchased a 1997 GMC Yukon with a 5.7L V8 engine. The truck passed smog testing, but it's currently displaying a P0300 diagnostic trouble code. When t...
1997 5.7 Yukon | P03002001 Hyundai Santa Fe V6 Automatic Transmission Stuck in Park: P1529 Code Fix and Sensor Diagnosis
My 2001 Hyundai Santa Fe with a V6 engine and automatic transmission is experiencing a serious issue after driving for some time. The transmission will not shift into park (P) o...
Hyundai | P21772003 Land Rover Discovery P1560 Fault: ABS, Brake and Downhill Indicator Lights On - What Does This Mean?
My 2003 Land Rover Discovery has several warning lights illuminated: ABS, Traction Control (TC), Brakes, and Downhill Assist. A mechanic diagnosed code P1560 using a scan tool, ...
2003 Land Rover Discovery | P15601999 Honda Integra V6 P0340 and P0385 Codes: Missing Camshaft/Crankshaft Sensor Bolts from Silver Box
I'm currently troubleshooting a 1999 Honda Integra V6 (VIN 8th digit is H). My son-in-law attempted to replace the alternator but became confused during the process and ended up...
unknown | P0340Practical 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.