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.
2003 Dodge Stratus P0128 and P0171 OBD2 Fault Codes - Solutions & Diagnostics
I own a 2003 Dodge Stratus with the 2.4L engine, currently at 42,000 miles. The check engine light is illuminated and displaying fault codes P0128 and P0171. I've already replac...
2003 STRATUS | P01282002 Dodge Grand Caravan P01684, P0442, P0455, P0456 - Evaporative Emission System Leak and Code Reset Guide
My 2002 Dodge Grand Caravan is showing fault codes P01684, P0442, P0455, and P0456, indicating a leak in the evaporative emission system. I've already replaced the gas cap, but ...
2002 Dodge Grand Caravan | P0442P0442 small & P0455 large evap emission control sys leak
I have a 2002 Dodge Ram 1500 with 3.7 L v6 & automatic trans. It has 38K Miles check engin light is on. The OBD scaner shows the following 2 codes: 1. P0442 evap emission contr...
unknown | P04421997 Chevrolet Malibu P0401 Code Fix: EGR Passage Blockage Solution
1997 Chevrolet Malibu with 97,000 miles I've documented this common issue and repair for fellow owners to avoid costly diagnostic visits. For several months, my Malibu was displ...
1997 Malibu | P0401P1744 Diagnostic Code on 1997 Ford Taurus After Transmission Replacement
After replacing the transmission in our 1997 Ford Taurus, we've started receiving the P1744 diagnostic code. The vehicle shifts smoothly through all gears and appears to operate...
1997 Ford Taurus | P17442001 Chevy Astro Van ABS Light On with P0265 Code - Fix at $150 vs GM's $2100 Quote
I own a 2001 Chevrolet Astro Van and recently noticed my ABS, AWD, and brake warning lights turning on intermittently before staying solid. After visiting the local GM service c...
2001 Chevy Astro Van | P0265Mitsubishi Eclipse P1400 Diagnostic Code: Causes and Fixes for Power Loss at 3000 RPM
My 1998 Mitsubishi Eclipse GST has developed a check engine light, and the diagnostic tool returned code P1400. This specific fault code is model-specific and relates to the fue...
Eclipse | P1400P0420 Fault on 2002 Chevrolet Grand Prix After Catalytic Converter Replacement
My wife's 2002 Chevrolet Grand Prix developed a clogged catalytic converter last year. The issue initially manifested as poor engine performance, followed by an EGR fault code. ...
2002 Grand Prix | P0420P0401 and P0402 Fault Diagnosis: 2000 Ford Taurus 24 Valve DOHC V6
The check engine light on my 2000 Ford Taurus with a 24-valve DOHC V6 engine has come on. After using an OBD2 scan tool, I received both P0402 (excessive EGR flow) and later P04...
2000 Ford Taurus | P04011999 Kia Sephia P1673 Code: Cold Start Issues and Heating Fan Fault
My 1999 Kia Sephia has difficulty starting in cold weather. Once it's running, the car starts fine. The onboard diagnostic system shows code P1673. I'm looking for information o...
1999 Kia Sephia | P16732002 Mitsubishi Galant P0135/P0136 O2 Sensor Fault: Which Sensor to Replace?
I recently purchased a 2002 Mitsubishi Galant and the check engine light has come on. The fault codes detected are either P0135 (O2 Sensor Heater Circuit Malfunction - Bank 1 Se...
Mitsubishi Galant | P01352005 Grand Caravan P0442 EVAP Code: How to Reset and Fix Without Professional Help
My 2005 Grand Caravan is showing a P0442 Evaporative Emission (EVAP) fault code, and the check engine light remains on even after I reseated the gas cap. The vehicle has only 34...
2005 Grand Caravan | P04421995 Blazer P1406 EGR Position Sensor Fault - Running Rough & Converter Rattling
I have a 1995 Blazer that has started running poorly. It previously had a persistent P0300 random cylinder misfire since I purchased it in November, but last week it began showi...
95 Blazer | P1406Ford Windstar P1518 Diagnostic Code: Causes and Solutions for Owners
I currently have a Ford Windstar with a P1518 diagnostic code and need assistance identifying the root cause. Could someone provide insight into what this error means, especiall...
ford windstar | P1518P1819 OBD2 Code Explanation for 2004 Pontiac Montana: What Is the Internal Mode Switch and How to Diagnose It?
The check engine light came on in my 2004 Pontiac Montana, and after connecting my Autotap scanner to my laptop, I retrieved the diagnostic code P1819. The code reads 'Internal ...
Pontiac Montana | P181901 Caravan with P0456 code
01 Caravan with 3.1 engine, 65K miles, gives P0456 code (evap system very small leak). What should I look for and in what order? Thanks for any feedback. Bob
Caravan | P0456Practical 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.