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.
2002 Mondeo Diesel P2338 P1211 P025-1 P1102 C1123 C1312 - Intermittent Preheat Light, Engine Hesitation and Loss of Power
My 2002 Mondeo Diesel is showing multiple fault codes: P2338 (Cylinder 3 Injector Issue), P1211 (Pressure Control Injector Out of Range), P0251 (Diesel Injection Pump Control A ...
2002 Mondeo Diesel | C11231996 GMC Sierra SLE 5.7L Vortec: P0102, P0141, P0172, P0175 - Rich Running, Backfiring & Rear Brake Pop
I own a 1996 GMC Sierra SLE with a 5.7L Vortec engine. The vehicle is throwing diagnostic trouble codes P0102, P014
96 GMC Sierra SLE | P01022010 Chevrolet Cruze U0100 DTC: No Crank Issue After Engine Overhaul
I own a 2010 Chevrolet Cruze and am experiencing a complete no-crank issue, accompanied by the U0100 diagnostic trouble code. The car started normally before we performed a full...
Cruze | U01001997 Volkswagen Jetta GL OBD2 Fault Codes: P1544, P0102, P0121, and P0341 - Engine Dies After 7 Seconds
My 1997 Volkswagen Jetta GL is displaying OBD II fault codes: P1544, P0102, P0120, and P0341. The vehicle starts but runs for only about 7 seconds before stalling completely. I ...
1997 Volkswagen | P01022000 GMC P1351 Code Fix: Original Key Solves Intermittent Starting Issue (No Chip Required)
I have a 2000 GMC Quad Cab 4WD with a Vortec 350 engine. This truck originally did not have a key chip, which led me to believe the issue wasn't related to immobilizer systems. ...
2000 GMC | P1351P0135 O2 Sensor Heater Fault in 2003 Chevy S10 4.3L Vortec - No Start, Rough Idle, Low Oil Pressure
I own a 2003 Chevrolet S10 4.3L Vortec 2WD truck and recently it has stopped starting altogether. Prior to this, the vehicle exhibited rough idling and sputtering. I've already ...
03 Chevy s10 4.3 Vortex | P0135P0325 Knock Sensor Code in 2005 Chrysler Town & Country 3.3L: No Check Engine Light, No Knock Sensor Present
I recently received a P0325 knock sensor circuit fault code from my OBD-II scanner. Notably, the check engine light is not illuminated. After clearing the code, it reappeared im...
Town and Country 2005 3.3L | P03252005 Dodge Neon SXT P0456 and P0457 - Check Engine Light Flashes, Rough Idle, Poor Fuel Economy
I've been trying to diagnose the issue for several attempts. Every time I turn on the car, the check engine light starts flashing, and I'm seeing fault codes P0456 and P0457. Th...
2005 dodge neon sxt | P0456P0521 OBD2 Code Explanation for 2007 Chevrolet Tahoe 5.3L V8 - Oil Pressure Sensor Issue
A month ago, my oil level was low and I topped it off to the correct amount. Since then, my oil pressure gauge has been consistently reading on the lower side of the scale—now s...
CHEVROLET TAHOE | P0521P0507 Fault with Infiniti i35: High Idle RPM and Erratic RPM Drops
I recently cleaned my throttle body using CRC Throttle Body Cleaner and reconnected all components. After the test drive, I'm now receiving Diagnostic Trouble Code P0507, indica...
Infiniti i35 | P05072004 PT Cruiser Check Engine Light with Code P0303: Misfire in Cylinder 3 - Running Fine at 112,000 Miles
The check engine light turned on in my 2004 PT Cruiser, and after scanning at a local auto parts store, I received diagnostic code P0303 — indicating a misfire in cylinder 3. De...
04 PT Cruiser | P0303P0172 Fault Code in 2003 Honda Accord V6: Diagnosis and Solutions
I'm experiencing a serious issue with my 2003 Honda Accord V6. After refueling, the car begins to slow down significantly. When I press the accelerator, it only reaches about 50...
2003 Honda Accord v6 | P0172GMC Sierra 5.3L Engine Misfire P0306: Diagnosis and Solutions for Cylinder 6
I'm experiencing a persistent P0306 fault code on my GMC Sierra with a 5.3L V8 engine. After replacing the spark plug, ignition wire, and coil pack for cylinder 6, the vehicle s...
GMC Sierra 5.3L | P03062002 Mercury Sable LS O2 Sensor Replacement Failed: P1131, P1151, P0401 Codes After Installation
I recently replaced both the downstream and upstream oxygen (O2) sensors on my 2002 Mercury Sable LS. After the replacement, my vehicle now shows three diagnostic trouble codes:...
2002 Mercury Sable LS | P04012009 Ram 1500 5.7L P0153 O2 Sensor Issue: Troubleshooting with Aftermarket CAI and Exhaust
My 2009 Ram 1500 5.7L is returning the P0153 diagnostic trouble code, indicating a malfunction in the oxygen sensor (B2S1) on the passenger side before the catalytic converter. ...
2009 Ram 1500 | P0153P0138 OBD2 Code Meaning and Solution for 2000 Jeep Wrangler
Hi, I'm looking for clarification on what the P0138 OBD2 diagnostic code means for my 2000 Jeep Wrangler. Can someone explain the cause and what steps I should take to resolve i...
wrangler 2000 | P0138P0128 Diagnostic and Fix for 2008 Buick Lucerne - Engine Coolant Temperature Sensor Issue
I'm experiencing a P0128 fault code on my 2008 Buick Lucerne. Upon starting the engine, the dashboard displays 'Engine Hot A/C Off', which is unusual because it's currently 0 de...
2008 Buick Lucerne | P01282003 Mitsubishi Eclipse P0303 Misfire on Cylinder 3 - Diagnosis and Repair Guide
My 2003 Mitsubishi Eclipse 4-cylinder is showing a misfire on cylinder 3, as confirmed by an OBD-II scanner. The auto parts store initially suggested the issue was caused by bad...
2003 Mitsubishi Eclipse | P03031996 VW Polo Classic Fault Code P04151 Meaning and Diagnosis
What does fault code P04151 mean on a 1996 VW Polo Classic? This diagnostic trouble code (DTC) is associated with the engine's emission control system, specifically indicating a...
1996 VW Polo Classic | P41512005 Mercedes-Benz E500 4MATIC Check Engine Light P2096 - Catalyst Fuel Trim Too Lean Bank 1
I own a 2005 Mercedes-Benz E500 4MATIC with 183,000 miles. The check engine light is on with fault code P2096: 'Catalyst Fuel Trim System Too Lean Bank 1'. I recently replaced b...
2005 Mercedes Benz E500 | P2096Practical 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.