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.
P0136 on a 2001 Ford Taurus SES
This code showed up about a month ago. I changed two of the four O2 Sensors at one time then about two weeks later I changed the other two. After doing so I cleared the code and...
2001 Ford Taurus SES | P01361998 Ford Windstar with New Transmission Now Shows 8 OBD II Powertrain Codes (PO122, PO743, PO750, PO751, PO755, PO756, PO760, PO761)
I recently purchased a 1998 Ford Windstar and discovered that the transmission was slipping severely after only about 15 minutes of driving. After replacing the transmission wit...
98 Windstar | P00001997 Ford Tbird with Multiple O2 Sensor Codes: PO131, PO135, PO141, PO155, PO161, and PO1131 - Diagnosis and Repair Guidance
I recently encountered a series of diagnostic trouble codes (DTCs) on my 1997 Ford Tbird: PO131, PO135, PO141, PO155, PO161, and PO1131. The issue began on June 7, 2010, when th...
1997 Tbird | P11312000 Chevrolet Monte Carlo SS with P1860 Code: Torque Converter Clutch Solenoid Issue
I own a 2000 Chevrolet Monte Carlo SS with 64,500 miles. Recently, I had the rack and pinion replaced. About a week later, I started experiencing shifting problems. Using an OBD...
2000 Monte Carlo SS | P18602001 Pontiac Montana Fault Codes P0135 and P0171: Causes and Diagnosis
My 2001 Pontiac Montana originally displayed code P0135. After replacing both oxygen (O2) sensors, the vehicle now shows both P0135 and P0171. I'm concerned because P0171 should...
2001 Pontiac Montana | P0135Kia Rio 2002 Diagnostic Code P1500: No Vehicle Speed Signal to TCM - Causes and Fixes
I'm currently troubleshooting a 2002 Kia Rio with diagnostic code P1500, which indicates 'No Vehicle Speed Signal to TCM'. The vehicle's speedometer does not function, and the e...
Kia | P15002001 Toyota Celica GTS PO172 Code: Rich Condition, Injector Leak, and Recurring Check Engine Light
Summary: My 2001 Toyota Celica GTS (stock setup) recently started showing a persistent PO172 code. I had previously replaced the spark plugs, but that was before the issue appea...
2001 Celica GTS | P01722006 Ford F150 P0302 Misfire Diagnosis and Repair Guide
My 2006 Ford F150 has started running rough, and after checking the diagnostic codes, I found both P0302 (cylinder 2 misfire) and P0506 (exhaust pressure too high). I believe P0...
2006 Ford F150 | P0302What Does OBD2 Code P1401 Mean for a 2000 Hyundai Accent?
I'm looking for information on what OBD2 diagnostic code P1401 means specifically for my 2000 Hyundai Accent. Can anyone explain the meaning of this code and what steps I should...
2000 Hyundai Accent | P14011996 Chevrolet C1500 P/U 5.0L V8: P0141, P0172, P0175, P0300 Codes & Starting Issues with Brake and Airbag Light Flashes
I own a 1996 Chevrolet C1500 P/U with a 5.0L V8 engine. The vehicle is currently displaying several diagnostic trouble codes: P0141, P0172, P0175, and P0300. Last night, when I ...
1996 Chevrolet C1500 P/U 5.0 L V8 | C1500P0131 and P0151 O2 Sensor Low Voltage Issue - 1996 Chevy Silverado 1500 5.7L
Hi, I'm having an issue with my 1996 Chevrolet Silverado 1500 equipped with a 5.7L V8 engine. My OBD2 scanner is showing two fault codes: P0131 (O2 Sensor Circuit Low Voltage - ...
Chevy Silverado | P01352002 Chevy Silverado 1500 5.3L P0332 Knock Sensor Issue: Causes, Fixes & Common Misconceptions
The P0332 diagnostic trouble code in a 2002 Chevrolet Silverado 1500 with a 5.3L V8 engine indicates a fault in the knock sensor on Bank 2 (rear cylinder bank). This code does n...
02 Chevy Silverado 1500 | P03322000 Toyota Camry P0420 Fault: How to Identify and Fix the Catalytic Converter Issue Without Replacing Both?
My 2000 Toyota Camry LE with a 2.2L engine and California emission standards has reached 195,000 miles. I've been consistently receiving a P042
2000 Camry | P0420Ford Focus SVT P1518 Fault Code: Causes and Repair Steps
I'm looking for reliable information on how to diagnose and fix the P1518 fault code in my Ford Focus SVT. I've scanned the vehicle and noticed that when the engine is off, the ...
Ford Focus SVT | P15182006 Saturn Vue V6 Misfires: P0300-P0306 Diagnostic & Fix Guide
Hi, I'm looking for help with my 2006 Saturn Vue V6 that's showing misfire codes P0300 through P0306. The vehicle was running fine before I replaced the spark plugs, and after r...
2006 Saturn Vue | P0300BMW 325i 2004 P0171 and P0174 Error: Causes and Solutions for 'System Too Lean'
Hi everyone! I'm currently dealing with BMW 325i (2004) displaying OBD-II diagnostic codes P0171 and P0174, both indicating a 'System Too Lean' condition. After some research, ...
BMW 325i | P01712002 Chevy Astro V6 4.3L with P0101 and P0106 Fault - MAF and MAP Sensor Issues
I own a 2002 Chevrolet Astro Van equipped with the 4.3L V6 engine. Yesterday, it began running poorly and I barely managed to drive it home. The vehicle starts fine and idles re...
2002 Chevy Astro | P0101Practical 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.