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.
1999 Honda Accord EX Misfire Diagnosis: P0300-P0304 and P1399 Codes Explained
I've reviewed numerous posts on this topic and tried various troubleshooting steps, but the issue persists. Vehicle: 1999 Honda Accord EX (standard model), 125,000 miles, regul...
99 Accord | P03002008 Dodge Caliper P-1610 Code: No Park Lights, Dashboard Flashing Five Times - Diagnosis and Fix
Hi everyone, I'm currently working on a 2008 Dodge Caliper and am encountering a P-1610 diagnostic code. This code indicates a 'Computer Output Circuit' fault in Section 10 of ...
2008 Dodge Caliper | P16101997 Ford Expedition P0171 and P0174 Diagnostic: Misfire in Cylinder 4 and Fuel System Issues
I have a 1997 Ford Expedition with a 5.4L engine. I recently replaced the spark plugs due to a misfire in cylinder #4. After replacing the fuel filter and clearing the codes usi...
1997 ford expedition | P01712000 Mercury Villager O2 Sensor and Knock Sensor Codes: Diagnosis and Fixes
Hi everyone, I'm new to this forum and have a question about three check engine codes that appeared on my 2000 Mercury Villager with a 3.0L V6 engine. The car is running smoot...
2000 Mercury Villager | P03002000 Mazda MPV P0174 Code: System Too Lean Bank 2 - Diagnosis and Solutions
I'm experiencing a P0174 diagnostic trouble code on my 2000 Mazda MPV, indicating that Bank 2 is running too lean. The vehicle has four oxygen (O2) sensors as shown in Mitchell'...
2000 Mazda MPV | P01742002 Dodge Durango Code P1391: Intermittent Crank/Cam Sensor Loss Fix & Diagnosis
Hello! I'm seeking help with a recurring Check Engine Light issue on my 2002 Dodge Durango (5.9L 408 Mopar engine). The vehicle is showing intermittent P1391 code — 'Intermitten...
Dodge Durango | P13912002 code p0306
i replaced spark plugs gas filter #6 ignition coil #6 injector compression is good on all cylinders. # 6 cyl has injector pulse and spark. vacumme steady at 18" yet #6 cylinder ...
2002 | P0306P1132 and P1152 OBD2 Codes on 2001 Ford F150 5.4L V8 - Possible Causes After Oil System Flush and Maintenance
I own a 2001 Ford F150 with a 5.4L V8 2WD engine. Recently, I've started receiving OBD2 diagnostic codes P1132 and P1152, which indicate issues with the oxygen sensors—specifica...
F150 | P11322005 Dodge Dakota P0104 Code: Mass Airflow Sensor Intermittent Issue with 4.7L V8 Engine
I own a 2005 Dodge Dakota equipped with a 4.7L V8 engine. I'm currently encountering a P0104 diagnostic trouble code, which is flagged as an intermittent Mass Airflow (MAF) sens...
2005 Dodge Dakota | P01042000 Honda Passport PO401 Code: How to Fix EGR Issue for Smog Compliance
I need to pass a smog inspection in the next few days and am looking for a reliable solution to resolve the PO401 code on my 2000 Honda Passport. The check engine light is curre...
2000 Honda Passport | P04011997 Ford Explorer 5.0L Fault Codes P0401 and P0402: Causes and Solutions
My 1997 Ford Explorer with a 5.0L engine is showing both fault codes P0401 (Insufficient EGR Flow) and P0402 (Excessive EGR Flow). How can the same system produce two conflictin...
1997 Ford Explorer | P04012001 Ford Windstar P0171 and P0174 OBD2 Fault Codes: Causes and Fixes
Hello everyone, I recently checked my engine fault codes and found P0171 and P0174. Can anyone help me understand what these codes mean and how to resolve them? Additionally, I...
2001 ford windstar | P0171Isuzu Axiom 2003 Check Engine Light & Codes P1125, P1221, P1295, P1515: Throttle Sensor or Wiring Issue?
I own a 2003 Isuzu Axiom SUV and have been experiencing intermittent engine stalling and poor performance for years. Despite multiple repairs—including intake manifold gaskets (...
Isuzu Axiom | P11252003 Jeep Wrangler Sport 4.0L - P0031 and P0132 OBD2 Codes: Fuel Consumption Increase, Loss of Power After Sensor Replacement
Hi everyone, I recently purchased a 2003 Jeep Wrangler Sport with the 4.0L engine, and since then I've been experiencing persistent OBD2 fault codes P0031 (HO2S Heater Control ...
2003 Jeep Wrangler Sport | P00312001 Ford F150 V6 P0171, P0174, P0303 Fault Diagnosis: Vacuum Leak and Coil Pack Issues
My 2001 Ford F150 V6 is experiencing severe engine shuddering at lower RPMs, especially in gears 3 and 4 with a manual transmission. The vehicle has triggered OBD-II diagnostic ...
2001 F150 V6 | P017199 Ford Ranger 2.5L P0402 Code: Excessive EGR Flow - Vacuum Pump Diaphragm Issue
My 1999 Ford Ranger 2.5L is showing a P0402 code indicating excessive EGR flow. I initially thought the issue was a sticking EGR valve, so I replaced it and cleared the code—thi...
99 Ford Ranger 2.5L | P04022003 Audi A6 P0015 Fault: B Camshaft Position Timing Over-Retarded Bank 1
Vehicle: 2003 Audi A6 (Automatic) Fault Code: P0015 - 'B' Camshaft Position Sensor - Timing Over-Retarded for Bank 1 No drivability issues reported, but the fault code persists ...
2003 Audi A6 | P0015Practical 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.