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.
2001 Dodge Caravan V6 3.3L Transmission Faults: P0750, P1782, P0700, P0760, P0755 - Limp Mode After Snowstorm
My 2001 Dodge Caravan V6 3.3L is showing multiple transmission error codes: P0750, P1782, P0700, P0760, and P0755. The vehicle has been running fine prior to this issue—no slipp...
Dodge Caravan | P0700P0302 Misfire Diagnosis and Fix for 2002 Ford Ranger - 6-Cylinder 3.0L Engine
HELP! My 2002 Ford Ranger with 140,000 miles has been experiencing severe engine bucking for three weeks despite extensive repairs. I've replaced all major components including...
2002 ford ranger | P03022001 Hyundai Santa Fe P0421 Code: Causes, Fixes, and Oxygen Sensor Diagnosis
I've been experiencing recurring check engine light issues with code P0421 on my 2001 Hyundai Santa Fe. After replacing the catalytic converter, the code initially disappeared. ...
2001 Hyundai Santa Fe | P0421Honda 0845 code
2002 CRV 160k miles regular sevice I have flashing D indicator and a 0845 code which I presume is trans, not sure though did a search but code #s don't always come up. Any help ...
Honda | P08451998 Ford Econoline 250 Check Engine Light: Codes P0156, P1131, P1151, P0301-P0306 with Rough Idle and Lean Conditions
My 1998 Ford Econoline 250 Cargo Van has a check engine light illuminated. The vehicle exhibits rough idle and hesitation at idle. Diagnostic trouble codes detected include P015...
1998 Ford Econoline 250 | P01562002 Honda CR-V P1166 and P1167 O2 Sensor Heater Circuit Fault Diagnosis
Hello, I'm experiencing trouble codes P1166 and P1167 on my 2002 Honda CR-V. I used the All-Data program to retrieve diagnostic information. The first step was to clear the code...
2002 Honda CRV | P1166P0171 and P0174 Error on 2001 Infinity I30 - Cold Start Engine Misses, Resolves with Warm-Up
I own a 2001 Infinity I30. After replacing a faulty coil pack that previously caused engine misfires, I now receive diagnostic codes P0171 and P0174. The issue manifests only wh...
2001 Infinity I 30 | P01711999 Yukon Denali PO300 Code: Diagnosis and Solutions After Multiple Repairs
2000 1999 Yukon Denali with 114,000 miles, 5.7L V8 4x4 engine. Recently encountered a persistent PO300 random misfire code after replacing the intake gasket. All components were...
99 Yukon Denali | P03002001 GMC Jimmy P0300 Code: Rich Running, Rough Starts, and Solutions
My 2001 GMC Jimmy with a 4.3L 2WD engine has been consistently displaying the P0300 random misfire code. I've also occasionally seen P0101 (mass air flow sensor malfunction) and...
2001 GMC Jimmy | P03001998 Chevy Tahoe P0308 and P0161 Codes: Diagnosis and Fix for Cylinder Misfire and O2 Sensor Heater Issue
I own a 1998 Chevrolet Tahoe with approximately 125,000 miles on the odometer. It's equipped with a 350 TBI engine and an automatic transmission. About three weeks ago, the vehi...
98 Chevy Tahoe | P01612001 VW Jetta, rain-related? P1142,1654,0300,0304,1166,0113
Hello all, I am new to this forum but already impressed by what I've read. It's nice to have a community like this. My 2001 VW Jetta has had a history of MAF sensor problems, s...
2001 VW Jetta | P01132004 Chevrolet Optra 5 P0128 Fault: Common Causes and Fixes
I'm experiencing fault code P0128 on my 2004 Chevrolet Optra 5. What have other owners found to be the most common cause of this issue? The code indicates that the engine is run...
2004 Chev Optra | P01281999 Mazda Protege LX 1.8L P0140 O2 Sensor Issue: Why Does CEL Trigger After Fueling?
This is a helpful site for home mechanics looking to troubleshoot car issues. I'm experiencing persistent Check Engine Light (CEL) problems with my 1999 Mazda Protege LX 1.8L t...
1999 Mazda Protege LX 1.8L | P0140BMW E46 318i (1998) P0300-P0303 & P0130/P0170 Fault Codes: Root Cause Diagnosis and Fixes
Hi everyone, I'm new to this forum and have been searching for solutions to recurring fault codes on my BMW E46 318i (October '98 model, M43TU engine), but haven't found a clea...
BMW E46 318i | P01301999 Ford Escort Engine Won't Start: Fixing P1506, P0171, and P0420 Codes
I own a 1999 Ford Escort with a non-original 4-cylinder engine that has recently stopped running. After retrieving the trouble codes using an OBD-II scanner, I found three key e...
99 Ford Escort | P0171P0401 Code on 2001 Toyota Camry: Causes, Fixes, and Urgency Explained
I own a 2001 Toyota Camry with approximately 85,000 miles. About 4,500 miles ago, the engine check light activated, prompting me to replace the PCV valve with a genuine Toyota p...
2001 Toyota Camry | P0401Practical 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.