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.
P1237 Diagnostic Code in 2000 Ford Taurus Flex Fuel: What It Means and How to Fix It
I recently encountered a P1237 diagnostic code on my 2000 Ford Taurus with flex fuel capability. The vehicle runs smoothly, idles steadily, and cranks easily after refueling. I ...
Ford Taurus | P1237Dodge Ram 5.9 Engine Misfire: P0305 to P0301 - Causes, Diagnostics & Fuel Injector Fix
My son owns a 2001 Dodge Ram 1500 5.9L V8 (gasoline), 4x4 automatic with 180,000 miles. Previously, the truck showed a P0305 code — which was resolved by replacing spark plugs, ...
Dodge Ram 5.9 | P03011997 Chevrolet Camaro RS with P0302, P0336, and P0441 Codes: Diagnosis and Repair Guide
Hello, I own a 1997 Chevrolet Camaro RS, and recently the Service Engine Soon light came on. I took it to AutoZone, where they diagnosed three OBD-II trouble codes: P0302 (Misf...
1997 Camaro RS | P0302Audi 2.8L 5-Speed 1998 - Troubleshooting P1130, P1133, P1128, and P1137 Fuel Trim & O2 Sensor Codes
Seeking expert advice on diagnosing and resolving the following OBD-II fault codes in my 1998 Audi 2.8L 5-speed manual transmission vehicle: P1130, P1133, P1-128, and P1137. The...
Audi 2.8 5 spd 1998 | P112898 Audi 2.8 V6 Standard - P1565 Code: Idle Speed Control Throttle Position Lower Limit Not Obtained
I recently purchased a 1998 Audi 2.8 V6 standard model and am encountering several diagnostic trouble codes, with the P1565 code recurring frequently. The error message reads 'I...
98 Audi 2.8 V6 | P1565P0123 Code on 1999 Jeep Wrangler Sport: TPS Replacement Failed - Sputtering & CE Light Issues
I own a 1999 Jeep Wrangler Sport and am currently troubleshooting a persistent P0123 diagnostic trouble code along with noticeable engine sputtering and the Check Engine (CE) li...
Unknown | P0123P1351 Major Problem, 96 Camaro Z28 LT1
Harry Crumb wrote: Hi. I'm surprised about the similarities between our problems. So far I've replaced the plugs and wires and was about to put in a new opti-spark dist. The pr...
96 Camaro Z28 LT1 | P13512003 Grand Am 3.4L V6 with P0131 O2 Sensor Code: Fix for Low MPG and Service Engine Light
My 2003 Grand Am 3.4L V6 has been running normally with an average fuel efficiency of 23 to 29 mpg. However, the last tank delivered only about 18 mpg, using regular 89 octane g...
2003 Grand Am 3.4L v6 | P01311998 Dodge Grand Caravan P1941 Code: What Does It Mean? Diagnosing Transmission Issue
Hello, I own a 1998 Dodge Grand Caravan with a 3.3L engine and automatic transmission, currently at around 156,000 miles. The check engine light came on, so I took it to Auto Zo...
1998 DODGE GRAND CARAVAN | P1941P0325 Fault on 1997 Toyota Corolla: Knock Sensor Issue and Engine Knock Diagnosis
Hi everyone! I have a 1997 Toyota Corolla DX with 137,000 miles. Last week, the "Check Engine" light came on unexpectedly. I replaced the knock sensor, and immediately after th...
Corolla | P032597 mazda protege....P1195 and P0400
This is on a 97 Mazda Protege SE, 5sp, 1.5L. I have 2 codes, P1195 and P0400. I have had the P0400 for a little while (it comes and goes for some reason), but just today i put ...
97 mazda protege | P04002004 Pontiac Grand Prix P0442 Code: Gas Cap Issue and Smog Check Requirements
A few weeks ago, my check engine light came on and I started seeing "gas cap removed" warnings on the dashboard. I would retighten the gas cap each time, which would temporarily...
2004 Pontiac Grand Prix | P04421999 Pontiac Grand AM GT P0102 Code: High Idle at 1300-1400 RPM - Diagnosis and Fixes
Hi everyone, I'm experiencing a persistent high idle issue on my 1999 Pontiac Grand AM GT, with the engine running at 1300-1400 RPM. The OBD2 diagnostic tool has picked up code ...
1999 Pontiac Grand AM GT | P01022001 Lexus RX300 AWD OBD2 Code 1135: What Does It Mean and How to Fix?
Hi everyone, I'm preparing for a road trip in my 2001 Lexus RX30-0 AWD, but the 'Check Engine' and 'VSC' lights have come on. My OBD2 scanner shows code 1135. After researchin...
Lexus | P1135P0102 Fault on 1999 Olds 88 with 3800 V6: Diagnosis Tips and Next Steps
My girlfriend's grandmother's 1999 Oldsmobile 88 equipped with a 3800 V6 engine and automatic transmission, currently at 63,200 miles, has developed a check engine light. The st...
99 Olds 88 | P0102P1130 Fault Code Diagnosis for 2003 Jeep Liberty KJ CRD - HO2S Circuit Low Variance Bank 1 Sensor 1
I'm encountering the P1130 diagnostic code on my 2003 Jeep Liberty KJ CRD with a 2.8L CRD engine: \n\nP1130 - HO2S Circuit Low Variance Bank 1 Sensor 1\n\nThis code is triggerin...
JEEP LIBERTY KJ CRD | P1130P0136 and P0141 O2 Sensor Heater Circuit Fault - 2001 Mitsubishi Eclipse GT Diagnosis
Hello, I own a 2001 Mitsubishi Eclipse GT and have recently noticed the "Service Engine Soon" warning light coming on. After using an OBD-II scanner, I've detected two diagnost...
Mits Eclipse | P0136Practical 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.