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 Sebring p0755 p0750 p0700
P0755 Shift Solenoid B Malfunction P0750 Shift Solenoid A Malfunction P0700 Transmission Control System Malfunction Ok, So i'm trying to help my sister find out some info for th...
98 Sebring | P0700PO150 and PO325 Error Codes on 1996 Nissan Maxima GLE: Causes, Fixes, and Repair Cost Guide
I recently failed my emissions test in Connecticut while driving a 1996 Nissan Maxima GLE. I'm committed to keeping this vehicle until it naturally wears out, but I'm getting co...
96 Maxima GLE | P01502001 Infinity QX4 P0158 Code: What Does It Mean and Do I Need Additional O2 Sensors?
I recently diagnosed a P0158 code on my 2001 Infinity QX4 at Checker Auto. The diagnostic reading is 'O2 sensor circuit high voltage - Bank 2, Sensor 2'. I've inspected the vehi...
Infinity QX4 | P01582001 Infinity QX4 Fault Code P1135 Explanation and Diagnosis
I recently diagnosed a Powertrain Diagnostic Trouble Code P1135 on a 2001 Infinity QX4 at Checker Auto. The code indicates an issue with the oxygen sensor heater circuit, specif...
Infinity QX4 | P11352001 Chevrolet Malibu P1441 Code After Head Gasket Replacement
I recently replaced the head gaskets on my 2001 Chevrolet Malibu and a few days later, the engine light came on with code P1441. I'm wondering if this is related to the head gas...
2001 Chevy Malibu | P14412003 GMC Sierra P0455 EVAP System Large Leak Diagnosis and Solutions
I recently purchased a 2003 GMC Sierra with a 5.3L V8 engine, which has accumulated approximately 87,000 miles. Recently, the check engine light came on, and the diagnostic code...
03 GMC Sierra | P04552004 Dodge Neon P0304 Check Engine Light: Misfire Diagnosis and Fixes
Hello everyone! This is my first time on the forum, and I've found the community's insights very helpful. My 2004 Dodge Neon recently triggered a check engine light, and after s...
2004 Dodge Neon | P0304P0455 and P0442 Fault Diagnosis and Fix for 2001 Dodge Ram 4x4 Quad Cab
Before addressing the issue, it's important to know your vehicle's mileage and confirm that you've used the correct spark plugs. While P0442 does not directly affect fuel econom...
2001 Dodge Ram 4x4 Quad | P0442P1320 Error in 2000-2001 Nissan Maxima: Ignition Coil Failure & Fix Guide
After replacing the starter on a 2000 Nissan Maxima, I began receiving a P1320 diagnostic trouble code (DTC), which relates to an ignition signal primary fault. The check engine...
Nissan Maxima | P1320Ford F150 Still Showing PO401 Code After Replacing EGR Valve, DPFE, and O2 Sensors
I'm currently facing a frustrating issue with my 1999 Ford F150. Despite replacing the EGR valve, DPFE sensor, and all oxygen sensors, as well as cleaning and replacing the EGR ...
Unknown | P04012001 Monte Carlo 3.4L Engine P0420 Code: Diagnosis and Solutions
I'm having trouble with my 2001 Monte Carlo 3.4L engine displaying OBD-II fault code P0420 even after replacing both the catalytic converter and oxygen (O2) sensors. The vehicle...
2001 Monte Carlo | P0420P1255 Code in 2001 VW Cabrio: Engine Coolant Temperature Sensor Short to Ground - Diagnosis & Repair Advice
My daughter drives a 2001 Volkswagen Cabrio with only 60,000 miles. The vehicle consistently displays the P1255 diagnostic trouble code — 'Engine Coolant Temperature Sensor Shor...
VW Cabrio | P1255Duramax Diesel P0101-C Code: Diagnosis and Common Causes Explained
I recently resolved a P0380-B glow plug issue by replacing two faulty glow plugs. Now I'm troubleshooting the persistent P0101-C code. After confirming that my Mass Air Flow (MA...
Duramax Diesel | P01011999 Ford Taurus P0301 Misfire Diagnosis: Causes and Solutions
I own a 1999 Ford Taurus with a 3.0L OHC engine. I've been consistently receiving DTC P0301, indicating a cylinder 1 misfire. I've already replaced the spark plugs and ignition ...
Ford Taurus | P030197 Dodge Ram 1500 3.9L V6 - P0420 and P0320 Codes: Diagnosis and Repair Guide
My 1997 Dodge Ram 1500 with a 3.9L V6 engine has been failing emissions due to persistent P0320 (Ignition/Distributor Engine Speed Input Circuit Malfunction) and P0420 (Catalyst...
97 Dodge Ram 1500 3.9l V6 | P0320P0761 Fault on 1997 Mercury Sable: O/D Off at 80km/h, Transmission Stuck in 3rd Gear
Hi, I own a 1997 Mercury Sable with approximately 120,000 km. When I reach around 80 km/h, the 'O/D Off' warning light begins to blink and the transmission fails to shift into ...
Mercury Sable | P0761P1133 O2 Sensor Fault - 1999 Pontiac Montana 3.4L Engine Diagnosis and Repair Guide
Diagnostic Code P1133: HO2S/O2S Insufficient Switching - Bank 1, Sensor 1 I own a 1999 Pontiac Montana with a 3.4L engine, currently at 77,000 kilometers and equipped with an a...
Pontiac Montana | P1133P0442 Evaporative Emission System Leak Detected in 1998 Mercedes ML320
My mechanic cleared the P0442 fault code once, but it returned within a week. I now use my own OBD-II scanner connected to my computer and have manually cleared the code. The ve...
1998 ML320 | 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.