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.
P0306 Fault Code in 2001 Mazda 626 2.5L: Causes and Diagnosis Guide
I'm experiencing a P0306 diagnostic trouble code on my 2001 Mazda 626 2.5L, indicating a misfire in cylinder #6. I've already replaced the spark plugs, wires, and coil pack. Wha...
2001 Mazda 626 | P0306P1128 Diagnostic Code on 2008 Chrysler Town & Country: Causes and Fixes
A 2008 Chrysler Town & Country owner is experiencing an OBD II diagnostic code P1128. This code indicates a problem with the upstream heated oxygen (O2) sensor, specifically rel...
2008 Chrysler Town & Country | P11282003 Chrysler 300M P0016 and P0340 Fault: Hard Starting in Cold Weather, RPM Limitation at 4000 RPM
My 2003 Chrysler 300M experiences difficulty starting when cold. The engine cranks for 5 to 10 seconds before finally starting, but only under cold conditions. Once running, it ...
2003 Chrysler 300M | P00162006 Ford F-250 6.0L Heavy Duty Engine P0232 Code - How to Diagnose and Fix Loss of Power at High Speed
My 2006 Ford F-250 with a 6.0-liter heavy-duty engine runs fine up to 100 kph, but then suddenly cuts out and loses all power. An OBD2 scan reveals a P0232 code. Multiple source...
2006 Ford F-250 | P02322002 Ford F150 4.2L 6-Cylinder OBD2 Codes P0171, P0172, P0174 - Diagnosis and Solutions
A diagnostic scan revealed the following OBD2 trouble codes: P0171 (Rich mixture bank 1), P0172 (Rich mixture bank 2), and P0174 (Rich mixture bank 4) on a 2002 Ford F15-0 with ...
2002 ford f150 6 cylinder 4.2 | P01712004 Ford Escape P2197 Fault: Wet Spark Plugs, Gas in Oil, and Failed Catalyst Converters
I own a 2004 Ford Escape with a persistent issue involving two spark plugs that are dripping fuel. The vehicle is showing fault code P2197, and I've noticed gas in my engine oil...
2004 Ford Escape | P21972010 GMC Terrain P0011 Fault: Intake A Camshaft Position Timing Over-Advanced Bank 1
Re: 2010 GMC Terrain SLT with fault code P0011 — 'Intake A Camshaft Position Timing Over-Advanced Bank 1'. This diagnostic trouble code appears intermittently and resolves on it...
GMC Terrain | P0011Dodge Dakota 1998 V6: P0351 Ignition Coil & P0138 O2 Sensor Circuit Fault - Freeway Shutdown Issue
My 1998 Dodge Dakota Sport with a 6-cylinder engine is experiencing repeated shutdowns while driving on the freeway or in stop-and-go traffic. The vehicle shows fault codes P035...
Dodge Dakota | P01381996 Honda Accord P0301 Code: #1 Cylinder Misfire Diagnosis and Solutions
I'm experiencing recurring P0301 engine fault codes on my 1996 Honda Accord (232,000 km with VTEC engine). The P0301 code indicates a misfire in cylinder #1. I've already perfor...
96 Honda Accord | P03012000 Dodge Ram 1500 5.9L V8 - P1740 Diagnostic Code Explanation and Transmission Impact
What does fault code P1740 mean for a 2000 Dodge Ram 1500 with a 5.9L V8 engine? I recently detected this code on my vehicle, which is a stock petrol/gas model (not LPG). The co...
2000 Dodge Ram 1500 | P1740P0172 Fault Diagnosis for 1999 Saturn SL2: Running Rich, Engine Warm-Up Issues
I'm seeking help diagnosing a P0172 code on my 1999 Saturn SL2. The vehicle is running rich and the check engine light comes on after the engine reaches operating temperature. ...
99 Saturn SL2 | P0172P1351 Fault Code Diagnosis: 1998 Chevrolet Pickup Engine Won't Start Despite Spark
My 1998 Chevrolet Pickup will not start, even though it has spark to all cylinders. The vehicle shows a P1351 diagnostic trouble code (DTC), which indicates an issue with the Ig...
1998 chevrolet pickup | P1351'03 Dodge Durango knocking with trouble code P0172
2003 Dodge Durango 4.7l V8 80k When I started the Durango today, there was a knocking noise (kinda sounds like a noisy valve) coming from the engine and I noticed a considerable...
03 Dodge Durango | P0172P0441 and P2187 Fault Codes Explained: 2007 V6 Santa Fe Diagnosis
Can a P0441 code lead to a P2187 code in a 2007 V6 Santa Fe? Yes, a significant vacuum leak can trigger both the P0441 (Evaporative Emission System - Incorrect Purge Flow) and P...
2007 V6 Santa Fe | P0441DTC P0491 Secondary Air Injection Relay Location and Diagnosis for 2005 Chrysler Sebring 2.4L DOHC
2005 Chrysler Sebring 2.4L DOHC 4-door sedan with automatic transmission (California model). I'm experiencing a DTC P0496 - Secondary Air Injection System Performance Fault. The...
Chrysler | P04912006 Dodge Grand Caravan 3.3L: P0404, P0440, P0441, P0446, P0100, P0400, P0048 - Multiple OBD2 Codes & Electrical Symptoms
I'm looking for help with my 2006 Dodge Grand Caravan 3.3L (180,000 km). The check engine light came on unexpectedly while driving to church. After scanning the vehicle, I recei...
06 Grand Caravan 3.3L | P0048P0308 Diagnostic for 2002 Lincoln Navigator: Spark Plug and Coil Replacement History
I own a 2002 Lincoln Navigator and recently received a P0308 diagnostic code. The vehicle runs smoothly with no noticeable engine misfire at idle—tachometer reads around 750 RPM...
Lincoln Navigator | P0308Practical 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.