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.
2001 explorer sport, 4.0L, sohc, v6/86,000miles/ 0171, 0174
Ok, i know this is like a broken record on this website, but im having problems with the 0171 and 0174 codes on my explorer. I recently had these codes, plus the 0401 pop up....
2001 Explorer Sport | P0171P0101 2000 oldsmobile intrigue 130k automatic 3.5 liters
I was driving home on the highway and the check engine light went on no symptoms or anything unusual. I checked the gas cap as I tanked in the morning but, this problem occured...
2000 Oldsmobile Insignia | P01011995 Nissan Altima P1320 Ignition Issue: Diagnosis and Solutions
I'm having trouble with my 1995 Nissan Altima (160,000 miles) that has been exhibiting ignition-related issues. After troubleshooting multiple fault codes, I replaced the knock ...
95 nissan altima | P13201999 GMC Suburban 7.4L Engine P1351 Code: Long Crank Time, Stalls, and Injector Leak Diagnosis
I'm completely frustrated with this issue on my 1999 GMC Suburban with the 7.4L V8 engine. After replacing the Ignition Control Module (ICM) twice and following all steps from A...
99 GMC Suburban | P1351P0304 Misfire Code Repeatedly Appears on 1997 Chevrolet Lumina 3.1L Engine
I recently purchased a 1997 Chevrolet Lumina equipped with a 3.1L engine. The vehicle exhibits a rough idle and poor performance at lower RPMs. A persistent P0304 diagnostic tro...
1997 Lumina | P03041998 Cadillac Eldorado P0121 Code: Fast Idle Issue and Causes
I recently encountered a P0121 diagnostic trouble code on my 1998 Cadillac Eldorado. When this code appeared, the engine would exhibit an abnormally high idle speed. I managed t...
1998 Cadillac Eldorado | P012196 VW JETTA 2.0 P 1582, P 1127
Working with a 96 Jetta with a 2.0 and 5spd. 120K Bought the car with the SEL already on, scaned it and came up with 3 codes. P1582, Idle Adaptation At Limit P1127, Long Term Fu...
96 VW JETTA | P1127OBD2 P0157 Fault in 2000 Chevrolet Silverado 5.3L 4x4 Z71 with 288,000 km
I own a 2000 Chevrolet Silverado 5.3L V8 4x4 Z71 with 288,000 kilometers on the odometer. Previously, I experienced OBD2 fault code P0161 (Oxygen Sensor Bank 2, Sensor 2), which...
Silverado | P0157Mazda Protege 5 2002 - Troubleshooting PO300, P1125, and PO420 Codes: Random Misfire, Catalyst Efficiency, and Fuel Pressure Issues
Hi there, I own a 2002 Mazda Protege 5 with a 2.0L engine. Recently, I've been experiencing intermittent running issues — the car runs smoothly for a while, then suddenly stutte...
Mazda Protege 5 | P11252000 Camry - P0401
I have a 2000 camry 4cyl. with 92K miles. The check engine light came on. The code is P0401, EGR - insuffieient flow. Where do I start?
2000 Camry | P04012000 Toyota Camry 4-Cylinder - OBD-II Code P0104: EGR Insufficient Flow Diagnosis
I own a 2000 Toyota Camry with a 4-cylinder engine and approximately 92,000 miles. The check engine light has activated, and the diagnostic trouble code displayed is P0104, indi...
2000 Camry | P01041997 Jeep Wrangler 107,000 Miles with P0171 and P0131 OBD2 Codes - Diagnosis and Fix
I recently purchased a 1997 Jeep Wrangler with 107,000 miles. After getting it back from the dealership—where they replaced the steering box and sensor—I started seeing two diag...
97 Jeep Wrangler | P01312000 Ford Taurus P0303 Cylinder 3 Misfire: Diagnosis and Fixes After Spark Plug and Coil Replacement
I've been experiencing a persistent misfire in cylinder 3 of my 2000 Ford Taurus for nearly a month. I've already replaced the spark plugs, spark plug wires, ignition coil, and ...
2000 Ford Taurus | P03032003 Mazda Protege P0300, P0400, P0113, P0103, P0102 - Idle Issues and Misfire Diagnosis
I own a 2003 Mazda Protege LX with a 2.0-liter engine and am experiencing recurring idle problems. The car runs fine under normal conditions but begins to struggle when idling—t...
2003 Mazda Protege | P01032000 Dodge Stratus 2.4L P0441 Incorrect Purge Flow After Filler Neck Replacement and LDP Repair
Vehicle History: - A P0442 error was initially detected, leading to replacement of the Leak Detection Pump (LDP). - Subsequently, a P0455 error appeared due to rusted filler nec...
2000 Dodge Stratus 2.4L | P044198 Ford E150 4.2L V6 with P0171 and P0174 Codes: Diagnosis and Fixes
Over the past few weeks, my 1998 Ford E150 4.2L V6 has been displaying both P0171 and P0174 OBD-II diagnostic codes. Initially, both codes appeared simultaneously, but now it's ...
Ford E150 | P0171P0300 Diagnostic and Fuel Pressure Issue on 1999 Olds Alero 2.4L Engine
While it's possible that the 1999 Oldsmobile Alero 2.4L engine may not require an inline fuel pressure adapter, I've personally never encountered a late-model GM vehicle without...
99 Olds Alero 2.4 | P03002001 Oldsmobile Alero P0442 Code: Evaporative Emissions System Leak Diagnosis and Fixes
I'm looking for help with a service engine light that came on in my 2001 Oldsmobile Alero. My brother-in-law scanned the vehicle and found Diagnostic Trouble Code (DTC) P0442, w...
2001 Olds Alero | P04422000 Ford Taurus Cylinder 3 Misfire in Wet Conditions - Common Causes and Fixes
My 2000 Ford Taurus is showing a misfire on cylinder 3. This issue typically doesn't occur under normal driving conditions but appears specifically during wet or damp weather. A...
2000 Ford Taurus | P0303Practical 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.