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.
2006 Jeep Rubicon 4.0L V6 Fault Codes P0300, P0335, P0122, P0161: Diagnosis and Timing Chain Issues
Hello everyone, I own a 2006 Jeep Rubicon with a 4.0L V6 engine and am currently experiencing multiple engine fault codes: P0300 (Random/Multiple Cylinder Misfire), P0335 (Crank...
06 Jeep Rubicon | P0122P0443 Code in 2004 Dodge Caravan: Diagnosing Purge Solenoid Wiring or PCM Issue
My 2004 Dodge Caravan (3.3L engine) is showing a P0443 OBD2 diagnostic code, with intermittent P0441 and P0446 codes appearing later. I've tested the purge solenoid wiring and f...
2004 Caravan | P0443Volvo V70 OBD2 Code P0171: Fuel Trim Bank 1 - Diagnosis and Next Steps
The oxygen sensor in bank 1 has already been replaced, but the check engine light remains on with OBD2 code P0171 (Fuel Trim Bank 1). Despite this repair, the issue persists. Wh...
Volvo v70 | P01711998 Jaguar XJ8 Misfire with P0175 and P0171 Codes: Diagnosis and Fix
I'm experiencing a noticeable misfire on my 1998 Jaguar XJ8, accompanied by diagnostic trouble codes P0175 and P017-than. I've already replaced the spark plugs, inspected fuel i...
1998 XJ8 Jaguar | P01712001 Jetta 2.0L Troubleshooting: P0121, P0638, and P0221 Fault Codes - Car Won't Start or Loses Power
I own a 2001 Volkswagen Jetta 2.0L and am experiencing recurring issues with my vehicle. The car sometimes fails to start completely, and when it does run, it suddenly loses all...
2001 Jetta 2.0 | P01212003 Ford Expedition P0231 OBD2 Code: Engine Stalls at Freeway Speed, Fuel Pressure Drops When Key Off
I own a 2003 Ford Expedition with a persistent P0231 diagnostic trouble code. The vehicle occasionally stalls while driving at freeway speeds; I have to pull over and restart it...
2003 ford expedition | P02312005 Jeep Wrangler P0421 Code Explanation: What It Means and How to Fix It
My 2005 Jeep Wrangler is showing a P0421 diagnostic trouble code. I want to understand what this code means and what repairs are needed to resolve it. The vehicle has a 4.0L eng...
2005 Jeep | P04212007 Toyota Camry V6 P0352 Ignition Coil Fault: Does Coil A Match Cylinder 1?
Question: The Diagnostic Trouble Code (DTC) definitions for ignition coil malfunctions specify that codes P0351 through P0356 correspond to ignition coils 'A' through 'F', respe...
2007 Toyota Camry V6 | P0352F-150 4.9L 6-Cylinder Engine Misfire & Lean Codes: P0306, P0174, P0161, P0141, P0118 - Diagnosis & Fixes
I've installed an OBD2 code reader during a static engine test (with the engine off) and received the following diagnostic trouble codes: - P0174: Bank 2 Lean Condition - P0161...
F-150 | P21772000 Ford Lightning P0171 AND P0174
Replaced MAF Replaced fuel filter Replaced all coil packs Replaced EGR Checked O2's on both sides. Voltage is good Checked all vacuum hoses Used X2 cans carb cleaner to check fo...
2000 Ford Lightning | P01712005 Ford Mustang GT P0506 Fault: Low Idle and Hesitation with A/C On
Recently purchased a 2005 Ford Mustang GT with 53,000 miles. The vehicle exhibits low idle speed, especially when the air conditioning is engaged. When accelerating, the car hes...
2005 Ford Mustang GT | P05062003 silhouette 3.4l P0101 125,000 miles
I am at work now when I get home I will check.
2003 Silhouette | P01012005 Nissan G35 P0340 Code: Loss of Power and Stalling on Highway - Diagnosis and Fix
Hi everyone, I'm currently dealing with a recurring issue on my 2005 Nissan G35 Sedan (Automatic). The problem started about a month ago, and I've now confirmed two P0340 Diagn...
2005 G35 | P03401996 Chevrolet 5.7L Engine Random Misfire and Running Lean: P0300, P0132, P0134, P0171 Diagnosis and Fixes
I own a 1996 Chevrolet with a 5.7L V8 engine and am experiencing persistent issues including random misfires (P0300), O2 sensor circuit high voltage (P0132), insufficient activi...
1996 chevrolet 5.7 | P01712008 Honda Accord with codes P0300, P0303 and P0306
Hello, cel came on a few days ago. Had the codes pulled and came back with those three. Engine running rough and also stumbles when accelerating from a stop nearly stalling. The...
2008 Honda Accord | P0300P0300 Misfire Diagnosis: How to Identify and Fix the Root Cause in a 1996 Dodge Intrepid 3.5L Engine
I'm new to this forum and hoping my question isn't a repeat of an old thread. I've been experiencing a misfire under load (between 45-65 MPH) for several months in my 1996 Dodge...
1996 Dodge Intrepid | P0300P0401 OBD2 Code on 1998 GMC Sonoma 2.2L Engine: Diagnosis and Solutions
I own a 1998 GMC Sonoma with a 2.2L engine and 5-speed manual transmission. I've been consistently receiving the P0401 diagnostic trouble code, indicating a malfunction in the E...
98 2.2 GMC Sonoma | P04012000 VW Golf MK4 1.8T Multiple OBD-II Fault Codes Explained: P0300, P0411, P1237, P1475 and More
I'm experiencing multiple fault codes on my 2000 VW Golf MK4 1.8T (Chassis Type: 1J - VW G/J/B Mk4) after a scan. The OBD-II diagnostic results show the following codes: Scan C...
2000 VW Golf MK4 1.8T | P21772002 Pontiac Grand Prix GT 3.8L - P0442 and P0404 Codes: EVAP Leak & EGR Valve Issues Explained
Hello, I've been experiencing issues with my 2002 Pontiac Grand Prix GT 3.8L over the past few days and am seeking advice from experienced owners or mechanics. I'm currently se...
2002 pontiac grand prix gt 3.8 | P0404Practical 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.