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.
98 Dodge Neon P0304 Fault: No Spark in Cylinder 4 Despite New Coil, Wires, Plugs, and Injector
Initially, I suspected a faulty coil and replaced it along with the spark plugs, ignition wires, and fuel injectors. However, the issue persisted. I later noticed that the gas ...
98 Dodge Neon | P03041999 Ford Ranger P1132 and P1152 Fault Codes: Causes and Solutions with X-Calibrator 2 Tuner
Hi everyone, I'm looking for some help diagnosing a persistent issue on my 1999 Ford Ranger. I've been using the Bama Chips X-Calibrator 2 Tuner with off-the-shelf tunes that wo...
1999 Ford Ranger | P11322000 S-10 4-Cylinder Misfire: P0304 Code - Diagnosis and Solutions
My 2000 S-10 with a 4-cylinder engine is throwing a P0304 diagnostic code indicating a misfire in cylinder 4. I've already replaced the spark plugs, ignition wires, the 1/4 (cyl...
2000 s-10 | P0304P0300 and P0742 Diagnosis: 2000 Chevrolet Cavalier with Automatic Transmission and 74,000 Miles
I own a 2000 Chevrolet Cavalier (2.2L engine, automatic transmission, 74,000 miles) and recently experienced a check engine light. A diagnostic scan revealed two fault codes: P0...
chevy cavalier | P030099 Honda Odyssey P0304, P0305, P1399
Hello. I have a 1999 Honda Odyssey that overnight developed a problem. When I started the car to check (my wives car so she told of the problem) I noticed right off it was mis...
99 Honda Odyssey | P030498 Chevy 5.7 Cylinder 5 misfire
Hello I have a problem with a 98 Chevy 4x4 5.7 Vortec that I think I’ve figured out. It started with the engine light being on for a while, with a slightly rough idle but other...
98 Chevy | P03052000 Toyota RAV4 PO446 EVAP System Fault: Diagnosis & Fix Guide
My 2000 Toyota RAV4, with 50,000 miles and a manual 4-cylinder engine, has had the check engine light on for three weeks. Recently, it's started having difficulty starting. The ...
2000 Toyota RAV4 | P0420P0155 O2 Sensor Heater Malfunction Diagnosis for 1996 Ford F150 with 300ci V8
I own a 1996 Ford F150 with a 300ci V8 engine, 6-speed transmission, and 4x4 drivetrain. The truck has approximately 60,000 miles on it. I've replaced the Bank 1 Sensor 1 O2 sen...
96 F150 | P01551995 Toyota Tercel P0401 Fault: EGR Valve and VSV Diagnosis Guide
Hello! I'm new to this forum but have found valuable information here. I own a 1995 Toyota Tercel with 140,000 miles and am currently experiencing a P0401 diagnostic code. I've...
1995 Toyota Tercel | P04012006 Chevrolet Equinox P1626 Fault: Theft Deterrent Fuel Enable Signal Lost with U2105 and U0100 Codes
I'm experiencing multiple diagnostic trouble codes on my 2006 Chevrolet Equinox, including: - P1626: Theft Deterrent Fuel Enable Signal Lost - C0276: Chassis / SAE / Injector Fa...
Chevy | P16261999 Chevrolet Silverado 1500 4.8L Engine Idle Jumps with Codes P0101, P0121, P0300, and P0507
I have a 1999 Chevrolet Silverado 1500 with a 4.8L V8 engine experiencing severe idle instability—engine RPMs jump up and down constantly. The check engine light is on, and I've...
99 silverado | P01012000 Hyundai Sonata Misfire After Washing: P0304 and P0100 OBDII Codes Explained
After washing my 2000 Hyundai Sonata at 80,000 miles, I noticed a misfire shortly after starting the engine. No vacuum leaks were detected, and no water was observed entering th...
Hyundai | P0100P1400, P0171, P0302, P0303 Fault Diagnosis - 2000 Ford Ranger 3.0L V6 Engine
Hello, I own a 2000 Ford Ranger with a 3.0L V6 engine and am experiencing multiple diagnostic trouble codes: P1400, P0171, P0302, and P0303. Symptoms include significant loss ...
2000 Ford Ranger | P01711998 Buick Skylark P0758 and P0442: Troubleshooting Transmission and Evap System Issues
I recently purchased a 1998 Buick Skylark with 178,000 miles from a used car dealership. It was previously a rental vehicle and is otherwise in good running condition. However, ...
1998 Buick Skylark | P0442P0171 Code on 1997 Dodge Intrepid: Fuel System Running Lean Bank 1 - Diagnosis and Fixes
I'm seeking help with a persistent P0171 code on my 1997 Dodge Intrepid with a 3.5L 24-valve engine. I've been struggling to pass emissions tests, and the issue has evolved over...
1997 Dodge Intrepid | P0171Practical 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.