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.
1998 Chevrolet Venture 3.4L P0300 Random Misfire: Diagnosis and Solutions
I own a 1998 Chevrolet Venture with a 3.4L engine that idles smoothly but experiences severe hesitation during medium to hard acceleration. The vehicle is showing a persistent P...
1998 chevrolet venture 3.4 | P0300P1135 DTC on 2001 Toyota Sienna: Is a 'Stretched Timing Belt' Really Possible?
I own a 2001 Toyota Sienna with over 91,000 miles. I've been experiencing intermittent 'Check Engine' light issues since past 70,000 miles. Recently, after spending $340 to addr...
2001 Sienna | P11352001 Honda Prelude Running Rich - Nitrous Oxide Setup and Fuel System Issues
I'm currently running a 75-shot nitrous oxide setup on my 2001 Honda Prelude and planning to fully build the engine this summer to support a ported 100-150 shot of nitrous. Give...
2001 Honda Prelude | P21772001 Honda Prelude P0172 P0170 Running Rich - Black Exhaust & Fuel Trim Issues
My 2001 Honda Prelude-SH has been running rich for an unknown period of time, indicated by persistent black exhaust fumes and unburnt hydrocarbons. The check engine light is sho...
2001 Honda Prelude | P0170P0130 O2 Sensor Fault on 2002 Vauxhall Corsa: Causes, Location & Fixes
I'm experiencing a recurring P0130 diagnostic code on my 2002 Vauxhall Corsa 1.2L. I can clear the code using an OBD2 scanner, but it returns after just a few hundred miles. Th...
Vauxhall Corsa | P0130P0102 and P0325 Fault Codes on 1997 Subaru Impreza Outback Sport: Diagnosis and Fix
I own a 1997 Subaru Impreza Outback Sport with an automatic transmission and no modifications. The car has been driven regularly in New York City, where humidity levels are high...
97 subaru | P0102P0135 Fault on 2001 Mitsubishi 3.0L V6: Is Bank 1 Front or Rear of Vehicle?
I'm experiencing a P0135 diagnostic trouble code, indicating a heater circuit fault in the upstream oxygen sensor (O2) for Bank 1. I consulted a Mitsubishi service technician to...
2001 Mitsubishi 3.0 V6 | P01352005 Dodge Ram 5.7L Hemi Engine P0171 and P0174 Codes: Diagnosis and Fixes After MAF Cleaning
I recently encountered P0171 (Fuel Trim System Lean - Bank 1) and P0174 (Fuel Trim Too Lean - Bank 2) on my 2005 Dodge Ram 5.7L Hemi. I cleaned the MAF sensor, and for a few day...
2005 Ram 5.7 Hemi | P0171OBD II P1345 Code on 1998 Chevrolet Blazer 4.3L V6 (Vortex) - How to Fix Camshaft & Crankshaft Position Correlation
I recently purchased a longblock engine core for my 1998 Chevrolet Blazer 4.3L V6 (Vortex) with no external components. I've replaced the distributor, cap, rotor, ignition wires...
98 chevy blazer 4.3L v6 (vortex) | P13451996 Blazer 4x4 P0133 O2 Sensor Issue: Loss of Power, Poor Fuel Economy & Engine Running Hot
I own a 1996 Blazer LT 4x4 with a 4.3L V6 engine (135,000 miles). Recently, the vehicle has developed significant performance issues including a noticeable lack of power and poo...
1996 Blazer 4x4 | P013399 Chevrolet Suburban P0302 Misfire: Diagnosis, Fixes & Real-World Solutions
I recently replaced the AC Delco distributor cap and swapped spark plugs from cylinders 2 and 4. After a test drive on the freeway covering approximately 40 miles (normally only...
99 Suburban | P03021997 Chevy K1500 P0300 and P0100 Codes: Rough Idle, Hard Start, and Misfire Diagnosis
I own a 1997 Chevrolet K1500 and am currently struggling with persistent engine issues. The truck started exhibiting a rough idle, which led me to replace the spark plugs—this d...
Chevy K1500 | P01002004 Subaru Forester P0483 Code: Cooling Fan Rationality Check Malfunction Explained
Hello! My check engine light came on recently, and I pulled the OBD-II diagnostic code — it's P0483. This code stands for 'Cooling Fan Rationality Check Malfunction'. After rese...
2004 Subaru Forester | P04831996 Ford Van P1351 Code: Ignition Coil or IDM Fault Diagnosis & Fix
I own a 1996 Ford Van with a 351 engine that recently started exhibiting severe misfiring and bucking under load. The vehicle originally ran smoothly, but now it shows trouble c...
1996 Ford Van | P13512003 Jeep Liberty Renegade 3.7L V6 P0306 Misfire: Diagnosis and Solutions
I've been consistently receiving a P0306 diagnostic trouble code (cylinder 6 misfire) on my 2003 Jeep Liberty Renegade with the 3.7L V6 engine. The vehicle cranks repeatedly—som...
2003 Jeep Liberty Renegade | P0306P0133, P0136, P0302 ('98 Volvo S70)
Hi I can't begin to understand what to do with this car (yah... I'm one of those guys). Apparently the car was taken to MIDAS (see reciept below) and a "whole new exhaust" was ...
98 Volvo S70 | P0133P1135, P0455, and P0140 OBD2 Error Diagnosis for 2000 Mazda Miata - Common Causes and Fixes
I own a 2000 Mazda Miata with regular maintenance, but I'm currently experiencing three OBD-II diagnostic errors: P1135 (O2 Sensor A2 Signal Stuck High), P0455 (EVAP System Leak...
2000 Mazda Miata | P01402004 BMW E46 316i P1050 Code: What Does It Mean?
I own a 2004 BMW E46 316i and recently received the P1050 diagnostic code. I'm unable to find a clear explanation of this code in official or online resources. Can anyone confir...
2004 BMW e46 316i | P1050Practical 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.