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.
Ford Focus 55 Reg Fault Code P2303: Diagnosis and Solutions
I own a Ford Focus 55th generation model and have recently encountered fault code P2303. The vehicle is stock with no recent modifications or engine work performed. I'm seeking ...
Ford Focus | P2303Nissan Primera P11 (1999-2000) Faulty Codes P0335 and P1336: Sudden Engine Shutdown & Startup Noise
Hello everyone. I'm experiencing a serious issue with my 1999-2000 Nissan Primera P11 wagon. The car will suddenly shut off while driving, whether in forward or reverse gear. Af...
Nissan Primera | P03352000 Dodge Durango Engine Code P0500 and P0460: Speedometer & Odometer Fail, What Do These Codes Mean?
My 2000 Dodge Durango with a 4.7L engine has over 301,000 miles. Recently, both the speedometer and odometer stopped working suddenly. All other gauges function normally, and th...
2000 Dodge Durango | P04631999 Eclipse GST Spyder PO446: Vent Solenoid Voltage Issue and Diagnosis
I'm troubleshooting a PO446 fault code on my 1999 Eclipse GST Spyder (2.0L turbo). The vent solenoid is not receiving voltage when the key is on, even though I've confirmed it c...
99 Eclipse GST Spyder | P0446Chevy S10 P0122 Fault: Check Engine Light Persistent, Transmission Lurches in Drive/Reverse
My Chevy S10 has recently triggered the check engine light. After running a diagnostic, I received fault code P0122 — indicating a throttle position sensor (TPS) issue. I replac...
Chevy S10 | P01222009 Jeep Patriot P0842, P0700, P2017 and P0456 Fault Codes - Acceleration Issues at 30 mph
My 2009 Jeep Patriot has been driving fine to campus, but on the way home it started struggling to accelerate—only reaching about 30 mph unless going downhill. My dad checked th...
2009 Jeep Patriot | P0700P0601 Internal Control Module Memory Checksum Error - 2003 Jeep Grand Cherokee (Note: Corrected vehicle model from 'Caravan' to accurate model)
What does P0601 internal control module memory checksum error mean for a 2003 Jeep Grand Cherokee? I recently discovered this fault code during an OBD2 scan. I replaced the TCM ...
2003 Caravan | P06012003 Hyundai Elantra OBD II P0507 Fault: How to Diagnose and Fix
I own a 2003 Hyundai Elantra with an OBD II diagnostic code P0507. What steps should I take to fix this issue? The code indicates an idle air control (IAC) system malfunction or...
2003 Hyundai Elantra | P05071999 Honda Accord P1456 Fault Code: EVAP Emission System Leak Detected
I recently encountered a P1456 diagnostic code on my 1999 Honda Accord 4-cylinder model. What does this error mean, and how can I fix it? Any insights would be greatly appreciated.
1999 honda accord | P14562001 GMC Sierra 1500 5.3L 4x4 O2 Sensor Voltage Issue: No Error Code at Operating Temperature
I own a 2001 GMC Sierra 1500 5.3L V8 4x4 Xcab and am experiencing inconsistent oxygen sensor readings. At operating temperature (650°F), I observe: - Post-catalyst Sensor 1: 0....
GMC | P21772002 Pontiac Sunfire Cylinder 1 Misfire: From Specific to Random, Diagnosis & Fixes
Hi everyone, I'm looking for help diagnosing a persistent misfire issue on my 2002 Pontiac Sunfire. The engine appears to have been replaced by a previous owner with a Cavalier-...
2002 Pontiac Sunfire | P03012008 Ford F150 P0451 OBD2 Code: Causes, Diagnosis, and Solutions
I own a 2008 Ford F150 with a 4.6L engine and approximately 30,000 miles. The check engine light is currently on, but the engine starts and runs smoothly with no other noticeabl...
2008 Ford F150 | P0451F350 6.0L Diesel P0264-282: Injector Circuit Low in Cylinders 1-8 - Won't Start After 300 Miles
2023 F350 with 6.0L diesel engine, currently at 125,000 miles. The check engine light has been on for approximately 300 miles. The truck ran normally until recently when it fail...
f350 6.0L diesel | P0264P0300, P0302, P0303, P0304,P0306 jeep wrangler
Jeep wrangler TJ, 2000, 6cyl. 4.0L Been having the above misfire codes, sometimes the light flashes when I push it on the accelerator, this issue I have been having for over a y...
jeep wrangler | P03002010 Nissan Versa OBD-II Code P0555: Brake Booster Pressure Sensor Issue & Cruise Control Symptoms
The check engine light (also referred to as 'Service Engine Soon') has activated on my 2010 Nissan Versa. After taking the vehicle to an auto parts store, I was given the OBD-II...
Nissan Versa | P0555Ford Fusion 1.6 Duratec CCM Fault - I/M Readiness Not Complete
I'm experiencing an issue with my Ford Fusion 1.6 Duratec (benzine, manual transmission) Europe model. The Comprehensive Component Monitor (CCM) is not completing its self-check...
Ford Fusion | P21772003 Buick Century 3100 eng codes P0128;P0336;P0440
Have changed 24x CKP,spark plugs,checked coils,fuel pump(aftermarket)plug wires,fuel pressure reg.,fuel filter but car fails to start on 1st crank,mostly on second try but if I ...
2003 Buick Century 3100 | P0128Practical 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.