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.
P1213 and P0300/P0301/P0302 Codes in 1999 VW Jetta VR6: Diagnosis and Repair Options
I own a 1999 VW Jetta VR6 (new body style) with over 120,000 miles. The check engine light is on, and I've pulled the following diagnostic codes from AutoZone: - P1213: Start i...
VW Jetta | P12132001 VW Cabrio Check Engine Light: Codes P04155, P04079, P0206 - What Does It Mean and How to Fix?
I recently purchased a used 2001 VW Cabrio and drove approximately 50 miles before the Check Engine light activated. The vehicle now displays three diagnostic trouble codes: P04...
2001 VW Cabrio | P0206P0336 Fault Code on 2000 Chevrolet Impala 3.8L: Causes, Fixes, and Preventive Measures
I own a 2000 Chevrolet Impala with a 3.8L engine and approximately 131,000 miles. Earlier this evening, while driving at around 60 mph on the highway, I noticed a sudden jerking...
2000 Chevrolet Impala | P03362000 Honda Civic EX - P0420 Code Locked-In
I've got a P420 code locked in on my car w/101,000 miles. Recently, my distributor dies and was replaced. I also replaced the spark plugs and wires (way overdue). The code poppe...
2000 Honda Civic EX | P04202002 Dodge Ram 1500 P0174 Fault Code: Causes and Diagnosis Tips
The O2 sensor in a 2002 Dodge Ram 1500 is often considered one of the most problematic sensors due to its sensitivity and susceptibility to failure. If you're experiencing a P01...
2002 Dodge Ram 1500 | P0174C1246 Diagnostic Code on 1999 Chevrolet Venture (3.4L V6) with ABS and Brake Warning Lights
Hello, I live in Belgium and own a 1999 Chevrolet Venture (locally known as a 'Chevrolet Transsport') equipped with a 3.4L V6 engine. Recently, the ABS, traction control (TC),...
99 Venture | C1246F97 Ford Aerostar 4L Engine P0171 Code: Diagnosis and Troubleshooting Guide
I own a 1997 Ford Aerostar with the 4.0L V6 engine and 145,000 miles on the odometer. Recently, during an emissions inspection, my vehicle triggered a P0171 (System Too Lean Ban...
F97 Ford Aerostar | P01712003 Jeep Liberty Sport P0320 Code: Check Engine Light On, Stalls When Warm, Won't Restart
The check engine light is on in my 2003 Jeep Liberty Sport with a 3.7L engine (70,899 miles). The vehicle stalls when it warms up and will not restart until it cools down. It ca...
2003 Jeep Liberty Sport | P02301997 GMC Suburban 5.7L 2WD 1/2 Ton P0122 and P1122 Codes - Hard Shift & SES Light On
I recently purchased a 1997 GMC Suburban with a 5.7L V8 engine, 2-wheel drive, 1/2-ton payload capacity, and a tow package. The vehicle has accumulated 165,000 miles. After repl...
97 Suburban 5.7 2-wheel drive 1/2 ton | P01222000 Cadillac Seville STS P0300 and P0303 Misfire Diagnosis - OBD2 Code Help
Hi, I have a 2000 Cadillac Seville STS with 172,000 miles. The On-Board Diagnostic (OBD) system shows both P0300 (random misfire) and P0303 (misfire detected in cylinder #3). I...
2000 Seville STS | P03001998 Mercury Villager P0302 Misfire Code: Diagnosis, Repair & Owner Experience
My 1998 Mercury Villager with 97,562 miles has been maintained by the dealer since new. Recently, the service engine light activated with diagnostic code P0302 — indicating a mi...
1998 Mercury Villager | P0302P0172 code on 04 Envoy
Hello all. I purchased a 04 Envoy 4.2L about two years ago and love it. But it needs help. This is long but I dont want to missing telling something that might be important so I...
04 Envoy | P0172P0441 Fault in 1996 Chevy Monte Carlo Z34: EVAP System Diagnosis and Repair Guide
I recently purchased a 1996 Chevrolet Monte Carlo Z34, and shortly after the purchase, the "Service Engine Soon" warning light activated while I was driving to work. A diagnosti...
1996 Chevy Monte Carlo Z34 | P04411997 Honda Civic P0302/P0303/P0304 and P1300/P1399 Misfire: Ignition System Diagnosis & Repair Options
Hello everyone, I own a 1997 Honda Civic with 61,000 miles. Recently, after completing a comprehensive 60,000-mile maintenance service, the Check Engine Light (CEL) came on. I ...
97 Civic | P03022003 VW Jetta TDI OBD2 Code P0224: What Does It Mean and Is It Related to Glow Plugs?
Hello everyone, this is my first post. I recently had my 2003 Volkswagen Jetta TDI vehicle scanned, and the diagnostic tool returned a code P0224 (not 17058 — which appears to b...
VW Jetta 2003 TDI | P0224Practical 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.