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.
P0335 Crankshaft Position Sensor 'A' Fault Diagnosis - 2001 Pontiac Montana
I recently replaced the crankshaft position sensor (sensor 'A') located behind the crank pulley and balanced shaft on my 2001 Pontiac Montana. After clearing the fault code usin...
2001 Pontiac Montana | P03352007 Dodge Ram 1500 P0430 Code: Causes, Fixes & O2 Sensor Replacement Advice
Hi everyone, I'm currently dealing with a recurring P0430 diagnostic code on my 2007 Dodge Ram 1500 4x4 (5.7L Hemi) with 107,000 miles. The truck was originally purchased in 200...
2007 Ram | P0430P0300, P0301, P0304 OBD2 Codes in 2003 Nissan Altima 2.4L Engine - Misfire & Hissing Noise Diagnosis
My 2003 Nissan Altima 2.4L engine shows intermittent misfires with OBD2 codes ranging from P0300 to P0304. The vehicle starts smoothly when cold and warms up normally, but after...
2003 Nissan Altima | P2177P0432 and P0441 Fault Codes in 2000 Jeep Cherokee Sport 4.0L V6 with AW4 Transmission (231J) - Catalyst Efficiency and EVAP System Diagnosis
I recently encountered both P0432 and P0441 fault codes simultaneously on my 2000 Jeep Cherokee Sport 4.0L V6 with an AW4 transmission (231J). Fuel efficiency has not noticeably...
2000 Jeep Cherokee Sport | P04322001 Chevy Sillhouette Minivan P1404 Code: EGR System Issue at Idle
Hello, I'm experiencing increasing engine noise at idle in my 2001 Chevrolet Sillhouette minivan. After taking it to AutoZone, the technician diagnosed a OBD-II fault code P1404...
2001 Chevy Sillhouette Minivan | P14042007 Kia Sedonia P0174 Code: Lean Bank 2 - Causes and DIY Diagnosis Tips
I own a 2007 Kia Sedonia and am experiencing violent surging during the first half-mile after starting on a cold engine. The vehicle is showing OBD-II diagnostic code P0174, ind...
Kia Sedonia | P01742000 Olds Silhouette P0131, P0137, P0480, P0742: Diagnosis and Repair Steps for OBD-II Codes
I own a 2000 Olds Silhouette GLS V6 with multiple OBD-II diagnostic codes: P0131, P0137, P0480, and P0742. I've already cleaned the MAF sensor, sealed a vacuum leak at the PCV v...
2000 Olds Silhouette | P0131PO170 Fault Code on 1995 Toyota T100 V6 Automatic: Causes and Solutions
I recently encountered the PO170 diagnostic code on my 1995 Toyota T100 with a V6 engine and automatic transmission. The code initially appeared as a generic fault, so I replace...
1995 Toyota T100 | P01702003 Saturn L200 P0420 Error After Resolving P0300 and P0141/P0172 - O2 Sensor or Catalytic Converter Issue?
My 2003 Saturn L200 (2.2L 4-cylinder, 130,000 miles) has developed a P0420 error two days after successfully resolving previous issues of P0300 and P0141/P0172. I replaced seve...
2003 Saturn L200 | P01411998 Dodge Dakota P0138 O2 Sensor Error: Shift Issues and Electrical Troubleshooting Guide
I own a 1998 Dodge Dakota with a 5.2L V8 and automatic transmission. The vehicle exhibits erratic shifting behavior—sometimes failing to shift up, causing the engine to run in f...
98 Dakota | P01382004 Ford Taurus Check Engine Light with P0174 Code: Causes, Fix, and Where to Buy Parts Cheaply
After a routine oil change today, my 2004 Ford Taurus suddenly triggered the check engine light. A diagnostic at the dealership revealed code P0174 — indicating a lean condition...
Ford Taurus | P01742003 Saturn L200 P0300, P0141, and P0172 Fix: Random Misfire and Oxygen Sensor Issues
I own a 2003 Saturn L200 with 130,000 miles and a 2.2L 4-cylinder engine. This vehicle recently developed several issues that I'm trying to diagnose and fix. The problem starte...
Saturn L200 | P01412004 Saturn Ion P0453 and P0496: Fix for Check Engine Light with Gas Cap and EVAP System Issues
A few weeks ago, my check engine light came on in my 2004 Saturn Ion. I took it to AutoZone and was diagnosed with code P0453, which indicates a high evaporative emission system...
2004 Saturn Ion | P0453PO300 Misfire Code on 2000 Chevrolet 4x4 5.7L Engine - Diagnosis & Solutions
I replaced the spark plugs and ignition wires a few weeks ago after noticing engine misfires. I also had to replace the distributor because the housing broke during cap removal ...
2000 Chevy | P03001997 Ford F150 4.6L P1451 Code: EVAP Canister Vent Solenoid Circuit Malfunction Diagnosis and Fixes
I've been researching the P1451 code on my 1997 Ford F150 with a recently rebuilt 4.6L engine, and I'm still unable to resolve it despite several repairs. P1451 - EVAP Control ...
97' Ford F150 4.6l | P1451P0136 Fault Reappears in 2003 Toyota Highlander AWD - Sensor Replacement Issue
I own a 2003 Toyota Highlander with a 6-cylinder AWD system. Approximately 11,000 miles ago, I received a P0136 diagnostic trouble code. I replaced both the upstream and downstr...
2003 Highlander | P0136Practical 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.