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.
2003 PT Cruiser P0441 Fault: Diagnosis and Repair After Replacing All EVAP Components
Hi, I have a 2003 PT Cruiser with 29,000 miles that failed the New Jersey inspection. I've already replaced the purge valve, leak detection pump, filter, vapor canister, and gas...
2003 PT Cruiser | P04412005 Kia Sportage P0056 & Intermittent STFT: Closed Loop Failure After Warm-Up
Hello everyone, I'm experiencing a recurring issue on my 2005 Kia Sportage with intermittent short-term fuel trim (STFT) and O2 heater faults. The problem only appears after th...
Unknown | P0056P1131 and P1151 OBD Codes After Replacing O2 Sensor on Bank 2 in 1999 Ford F150 V8
After replacing the oxygen sensor on Bank 2 of my 1999 Ford F15-0 V8, I received a new OBD code: P1131 and P1151. Initially, I was given a P174 code after the replacement, but f...
F150 V8 | P11312004 Pontiac Grand Am 3.4L 6-Cylinder Vehicle - How to Clear P0445 OBD2 Code After Fixing Evaporative Emission System Issue
After diagnosing and repairing the evaporative emission system leak in my 2004 Pontiac Grand Am with a 3.4L 6-cylinder engine, I'm now looking for guidance on how to properly cl...
2004 pontiac grand am | P04452009 Chevrolet Malibu P0013 and P0-than P0014: Causes and Fixes
I own a 2009 Chevrolet Malibu that is throwing diagnostic trouble codes P0013 and P0014. What are the most likely causes, and what steps should I take to fix them? These codes ...
2009 Malibu | P0013Hyundai Elantra 2001 P0450 and U0P00 Codes: Check Engine Light On, EVAP System Issue
My 2001 Hyundai Elantra (4-door, 57,000 miles) has a check engine light on. After visiting an auto parts store, two diagnostic codes were returned: P0450 and U0P00. The P045-50...
Hyundai Elantra | P04502010 HHR 2.2L P0507 High Idle Code: Troubleshooting After Engine Replacement
I recently replaced the engine in my 2010 HHR with a stock 2.2L unit from the same model year Chevrolet Cobalt. However, I'm still experiencing a persistent P0507 diagnostic tro...
2010 HHR | P0507P0132, P1345, and P1481 Fault Codes in 2002 Chevrolet Trailblazer - Diagnosis & Solutions
I have a 2002 Chevrolet Trailblazer with three trouble codes: P0132, P1345, and P1481. - P0132 (HO2S Circuit High Voltage Bank 1 Sensor 1): This indicates an issue with the ox...
CHEV TRAILBLAZER 2002 | P0132Code U0073 in 2006 Chevrolet Equinox: E-Brake Light On After EGR Valve Replacement
I recently had to pass an emissions test and was previously experiencing a P0404 code related to the EGR valve, which caused my check engine light to stay on. I replaced both th...
Chevrolet Equinox | U00732004 Nissan G35 6-Speed Manual: PO327 & P011 Codes After Clutch and Flywheel Replacement
I own a 2004 Nissan G35 6-speed manual transmission coupe. After replacing the clutch and flywheel at 133,000 miles, I received the vehicle back the same day. Shortly after, the...
04 G35 6 MT | P03271996 Chevrolet Silverado 5.7L Vortec P0300 Misfire: Diagnosis & Solutions After Multiple Part Replacements
I own a 1996 Chevrolet Silverado with the 5.7L Vortec engine and am currently experiencing a persistent P0300 misfire code. Over the past year, I've replaced several components ...
NIGHTMARE | P03002002 Cadillac Deville P0410 Code: Secondary Air Pump Not Running After Replacement
I'm experiencing a recurring P0410 fault code on my 2002 Cadillac Deville. I've already replaced the relay and the secondary air pump, and the code resets after about 30 miles. ...
Cadillac Deville 2002 | P04651998 Dodge Dakota P0138 O2 Sensor Fault: Causes and Fixes for Exhaust Modifications
I own a 1998 Dodge Dakota 4x4 with a 318ci engine, currently at 180,000 miles. It has performed reliably over the years, except for transmission issues—though that is a separate...
1998 Dodge Dakota | P01382003 Lincoln Navigator 4WD 5.4L Engine P0172, P0174, P2196 - Slow Response Below 30mph After Transmission Replacement
My 2003 Lincoln Navigator with 4WD and a 5.4L V8 engine is experiencing slow acceleration, only responding up to 30 mph. The transmission was recently replaced, but the issue pe...
2003 Lincoln Navigator 4wd | P0172p0496 problem 2007 kia rio
I have a kia rio 2007 and the code p0496 was on so i changed the purge valve solenoid but the code keep coming up wath should i do next ?
2007 Kia Rio | P0496Bank 2 Sensor 2 Fault in 2004 Chevrolet Silverado: Diagnosing and Fixing Low Knock Sensor Input
The check engine light came on in my 2004 Chevrolet Silverado, and the initial diagnostic indicated a faulty knock sensor #2. I took it to a trusted mechanic who performed a sec...
Silverado | P21772001 Mercury Sable Fault Codes P1747, P0743, P0750, P0760, P1451 - Causes and Solutions
Hi, I recently had my front axle and brakes repaired. Could this work have caused the appearance of these diagnostic trouble codes (DTCs): P1747, P0743, P0750, P0760, and P1451?...
2001 Mercury Sable | P0743PO442 Diagnostic: How to Replace Gas Tank Cap on 2001 Chevy Lumina for Small EVAP Emissions Leak
I'm looking for the best non-original manufacturer gas tank cap replacement for my 2001 Chevrolet Lumina, specifically to address a PO442 code indicating a small evaporative emi...
Small | P0442Practical 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.