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.
1997 Toyota Camry V6 Check Engine Light Returning with P0130, P0133, P0150, P0153 O2 Sensor Codes
I recently replaced both upstream oxygen sensors on my 1997 Toyota Camry V6, and the car's performance improved significantly. However, after driving just a few miles, the check...
97 Camry | P0121P0174 OBD2 Code on 2002 Ford F250 5.4L Triton V8 - Diagnosis & Fix Guide
I own a 2002 Ford F25-0 with the 5.4L V8 Triton engine. My OBD2 scan tool detected a P0174 code, which indicates that Bank 2 Sensor 1 Oxygen (Oxy) sensor is detecting a lean fue...
2002 F250 | P01742003 Nissan Sentra 1.8L P0303 Misfire: Diagnosis and Fix Guide
I own a 2003 Nissan Sentra with a 1.8L engine. Recently, the vehicle began shaking noticeably when starting, almost feeling like it was about to stall. Once it gained momentum, ...
2003 Nissan Sentra | P03032001 Subaru Legacy Wagon P0420 Code: Front O2 Sensor Reads 3-4V, Cat Efficiency Issue & DIY Diagnostic Tips
I own a 2001 Subaru Legacy Wagon (manual transmission) with 137,000 miles. The Check Engine Light is on, and I've been receiving the P0420 diagnostic trouble code — indicating p...
Subaru Legacy | P04202003 Dodge Ram 2500 5.7L P0172 Rich Condition: No Idle, Throttle Required, Fix with Vacuum Leak Diagnosis
Hi everyone! I'm currently troubleshooting a 2003 Dodge Ram 2500 with a 5.7L V8 engine that exhibits a no-idle condition. The vehicle only starts when the throttle is pushed ha...
2003 Dodge Ram 2500 | P01721996 Lexus ES300 P0340 Fault: Camshaft Position Sensor Issue & Troubleshooting Guide
I'm experiencing a recurring P0340 fault on my 1996 Lexus ES300 V6, and I'm seeking reliable troubleshooting steps to resolve it. The issue began with a noticeable misfire in c...
Lexus ES300 | P034099 Isuzu Rodeo 4x4 6Cyl - Troubleshooting P0405, P0452, P0453 and Other OBD-II Codes
I recently discovered several OBD-II diagnostic codes on my 1999 Isuzu Rodeo 4x4 6-cylinder vehicle: P0102, P0304, P0405, P0452, and P0453. While I've found some guidance for th...
99 Isuzu Rodeo 4x4 6cyl | P0405P0126 and P0128 Error Code in 2005 Mazda 3: Is a Stuck Open Thermostat the Cause?
I own a 2005 Mazda 3 with a 2.0-liter engine and have reached 116,000 miles. The check engine light activated, and after scanning the vehicle's OBD-II system, I found two fault ...
2005 Mazda 3 | P01261998 Toyota Sienna P0125 Code: Causes, Symptoms, and Repair Guidance
My 1998 Toyota Sienna van recently triggered a P0125 diagnostic trouble code. The first time it appeared, I noticed low coolant levels, so I refilled the system and reset the co...
1998 Sienna | P0125P0353 Fault Code on 2001 Ford Expedition: Diagnosis and Solutions
I recently purchased a 2001 Ford Expedition with a P0353 diagnostic trouble code. I've already replaced both the ignition coil and spark plugs, and confirmed that power is prese...
2001 Expedition | P0353P0300 Fault on 2002 Isuzu Rodeo: Fuel Pressure & Coil Pack Issue Resolved
The P0300 misfire code on a 2002 Isuzu Rodeo is commonly linked to low fuel pressure, especially in vehicles with GM-sourced components. While I don't have the exact fuel pressu...
02 Isuzu Rodeo | P03001998 Buick Skylark P0401, P0171, P0420, P0300: Are These Codes Interrelated? Diagnosis and Repair Guide
Hello everyone, I'm currently working on a 1998 Buick Skylark with multiple check engine light codes: P0401, P0171, P0420, and P0300. I'm seeking clarity on whether these codes ...
1998 Buick Skylark | P0171PO151 and PO131 Diagnostic for 1999 Chevrolet Suburban K1500 - Fuel Pump Replacement & O2 Sensor Issues
I own a 1999 Chevrolet Suburban K15-00. After replacing the fuel pump in April, the vehicle initially ran smoothly. However, I began experiencing a loss of compression when driv...
1999 Chevy Suburban | P0131PO300 Code in 2006 Chevrolet Silverado 4.3L V6: Diagnosis and Fixes for Poor Acceleration
I own a 2006 Chevrolet Silverado with 55,000 miles, 2WD, 4.3L V6 engine (VIN X). The truck exhibits severe acceleration issues—so bad I can barely make it around the block. It r...
chevy silverado | P0300P0406 OBD2 Code Explanation: EGR Sensor 'A' Circuit High in 2004 Dodge Ram 5.7 Hemi
Hello, I'm having trouble with my 2004 Dodge Ram 1500 5.7L Hemi that has triggered an OBD-II diagnostic code P0406 — indicating a 'High' signal from the EGR Sensor 'A' circuit. ...
2004 Dodge Ram | P04062002 Isuzu Rodeo P1515 Code: Engine Dies Suddenly, Repeats on Same Hill with P1125 and P1295 Codes
I own a 2002 Isuzu Rodeo with a V6 engine. The vehicle will suddenly shut off while driving, with the tachometer dropping rapidly. Sometimes it restarts on its own, but this hap...
Isuzu Rodeo | P15152002 Ford F150 4.6L V8 PO300 Code - Multiple Cylinder Misfire Diagnosis
I'm experiencing a persistent PO300 code indicating multiple cylinder misfires on my 2002 Ford F150 with a 4.6L V8 engine. This issue appeared suddenly after regular maintenance...
2002 ford f150 4.6 v8 | P0300Practical 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.