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.
1996 Toyota Tercel EGR Flow Insufficient - No EGR Temperature Sensor?
I've thoroughly checked all possible components and everything appears to be functioning correctly. However, I'm unable to locate a repair manual that addresses this specific is...
96 Tercel | P04001998 Pontiac Grand Prix 3.8L P0108 Code: Troubleshooting Guide for MAP Sensor Too High
I own a 1998 Pontiac Grand Prix with the 3.8L engine, currently at 150,000 miles. The car runs smoothly and has no noticeable performance issues. However, I've recently cleared ...
98 Grand Prix | P0108P1684 Diagnostic and Engine Stalling in 2000 Dodge Intrepid 2.7L
I own a 2000 Dodge Intrepid with a 2.7L engine and approximately 105,000 miles on the odometer. This afternoon while shopping at Target, I noticed the radio stuttered during ou...
2000 Dodge Intrepid | P1684P0441 OBD2 Code in 1996 Chevrolet Corsica 3.1L - EVAP System Pressure Issue
I recently encountered a recurring P0441 diagnostic trouble code (DTC) on my 1996 Chevrolet Corsica 3.1L engine after resolving a previous P0302 misfire issue. To fix the P0302,...
96 Chev Corsica 3.1 | P04412002 Mazda 626 V6 Engine Shaking with P0133, P1131, and P0305 OBD2 Codes - Diagnosis & Component Locations
2002 Mazda 626 LV, 2.5L V6, Automatic Transmission, 185,000 miles My 2002 Mazda 620 has been experiencing intermittent shaking, especially when climbing hills. The Check Engine...
2002 Mazda 626 | P01331998 Ford Taurus P0734 and P0761 Fault Codes: Overdrive Not Engaging & Repair Cost Concerns
A 1998 Ford Taurus with a 3.0L automatic transmission is currently showing diagnostic trouble codes P0734 and P0760. The check engine light (MIL) is illuminated, and the vehicle...
1998 Taurus | P073497 Toyota 4Runner 4WD 3.4L Engine Light On with Persistent P0301 Code
The engine warning light came on in my 1997 Toyota 4Runner 4WD with a 3.4L V6 engine. After scanning, the vehicle displays error code P0301 (Cylinder 1 Misfire). I have already ...
97Toyota 4Runner 4WD 3.4L | P0301P0420 Diagnostic and Repair Guide for 1998 Chevy Express Van
I've been researching the P0420 diagnostic code on my 1998 Chevrolet Express Van, and I'm now facing a persistent check engine light that has stayed on despite previous attempts...
Chevy Express Van | P04201996 Explorer P0420 & P0300
I have the 4.0 engine in the 4x4 4-door model. I replaced the EGR valve, the module that regulates it, my converter and O2 sensor on the converter. I still get the "efficiency b...
1996 Explorer | P03002004 Chevrolet Silverado 4.3L Engine P0135 and P0300 Code Issues - Troubleshooting Guide
My 2004 Chevrolet Silverado with a 4.3L V6 engine is showing two diagnostic trouble codes: P0135 and P0300. I've already replaced the spark plugs and ignition wires, and while t...
2004 chevrolet silverado | P21772003 Hyundai Tiburon Supercharged P0304 Code: Injector or Fuel System Issue?
I'm posting this in the right section as I believe it's related to fuel injection and engine performance. I own a 2003 supercharged Hyundai Tiburon 2.7L, recently upgraded with ...
Tiburon | P03042001 Ford Taurus P1401 Code: DPF EGR Circuit High Voltage Detected - How to Fix?
Hello! I'm looking for help with a P1401 diagnostic code on my 2001 Ford Taurus (DFP EGR circuit high voltage detected). The vehicle is showing this error, and I'd like to under...
Ford Taurus | P14011997 Chevy C1500 5.7L Vortec: Troubleshooting 7 DTCs (P0740, P0785, P0141, P0161, C0503, C0507, P1860)
I recently acquired a 1997 Chevrolet C1500 with a 5.7L Vortec engine and 4L60E transmission. Today, the check engine light illuminated, prompting me to retrieve diagnostic troub...
1997 Chevy C1500 7 | P00002002 Chevy Silverado 5.3L V8 P0171, P0174, and P0300 Fault Diagnosis and Fixes
I own a 2002 Chevrolet Silverado with a 5.3L V8 engine and approximately 117,000 miles. About a week ago, I noticed the vehicle would spit and sputter when starting, especially ...
02 Chevy Silverado | P01711997 GMC Suburban 5.7L Engine P0174, P0154, P0151, P1153 - O2 Sensor Issues and Lean Condition Diagnosis
Thank you to anyone who helps with this issue. I own a 1997 GMC Suburban with a 5.7L unleaded engine (R VIN), currently at 213,000 miles (driving approximately 40,000 miles ann...
GMC Suburban | P0151Ford Thunderbird 97 P0125 P0172 P0175 Fault: Engine Stalls on Acceleration - MAF Sensor Diagnosis
I own a 1997 Ford Thunderbird with a 4.6L V8 engine and automatic transmission. The vehicle is displaying trouble codes P0125, P0172, and P0175. It runs smoothly at normal speed...
Ford | P0125Practical 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.