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.
2006 Ford Five Hundred P1719 Code: Stalling During Shift from First to Second Gear
I own a 2006 Ford Five Hundred that my son has been driving for approximately one year. Since then, the vehicle has experienced significant wear and tear. Now, I'm driving it an...
Fivehundred | P17191997 GMC Sierra P0300 Code: Misfire Diagnosis and Solutions
My 1997 GMC Sierra is consistently showing a P0300 diagnostic trouble code, indicating a random misfire. I've already replaced the spark plugs, wires, distributor cap, and rotor...
97 gmc sierra | P03002004 Mercedes C240 DTC P0001: Fuel Volume Regulator Control Circuit Issue - How to Diagnose and Fix
I recently discovered a pending diagnostic trouble code (DTC) P0001 on my 2004 Mercedes C240 4matic. The code indicates a 'Fuel Volume Regulator Control Circuit/Open' fault. Des...
2004 MERCEDES C240 | P00012003 Dodge Durango P1603, P1604, and P1698 Codes: Overdrive Issue & PCM Diagnosis
My 2003 Dodge Durango is slipping when accelerating out of parking and I believe it's stuck in overdrive. The vehicle has error codes P1603, P1604, and P1698. I'm not sure what ...
2003 dodge durango | P16032002 Mitsubishi Lancer P0340 Code: Hot Coils & Timing Issues After Head Replacement
I'm experiencing issues with cylinders one and three coils becoming extremely hot. I recently replaced the engine heads and installed a new timing belt. After reassembly, the ve...
2002 Mitsubishi Lancer | P03402006 Kia Sedona P2422 Code: Evaporative Emission Vent Valve Stuck Closed - How to Fix Without High Costs?
In North Carolina, my vehicle fails emissions inspection due to the persistent P2422 diagnostic code, indicating that the evaporative emission vent valve is stuck closed. The ch...
2006 Kia Sedona | P24222000 Ford F150 Check Engine Light: P0430 and P1740 Codes - Diagnosis and Solutions
I own a 2000 Ford F15
F150 | P04302011 Chevrolet Equinox P0420 Code: Causes, Diagnosis, and Repair Options
I recently brought my 2011 Chevrolet Equinox in for a check engine light diagnosis, which revealed the OBD-II fault code P0420 — indicating a catalytic converter efficiency issu...
2011 Chevrolet Equinox | P0420P1309 Diagnostic Code in 1999 Ford Ranger 3.0L 6-Cylinder Flex Fuel: Causes and Timing Adjustment Guide
I'm experiencing a recurring P1309 diagnostic code on my 1999 Ford Ranger with a 3.0L 6-cylinder flex fuel engine. The vehicle has undergone major repairs including a complete e...
Ford | P13092000 GMC K3500 7.4L Engine P0122 TPS Code: No Signal to ECU - Diagnosis & Fixes
I own a 2000 GMC K3500 with the 7.4L engine, and it's currently displaying the P0122 throttle position sensor (TPS) fault code. I've confirmed that the TPS is receiving proper p...
TPS | P0122How to Fix P0106 OBD2 Diagnostic Code on 2004 Chevrolet Trailblazer 4.2L 6-Cylinder
What is the correct procedure to repair the P0106 diagnostic trouble code in a 2004 Chevrolet Trailblazer with a 4.2L 6-cylinder engine? The code indicates a circuit issue relat...
2004 Trailblazer | P01062008 GMC Canyon P0601 Fault: Engine Dies at Half Temperature or with AC/Heater On
My 2008 GMC Canyon is throwing trouble code P0601. After stopping at a red light, the engine suddenly dies and flashes 'reduced power.' It restarts after a few seconds. This iss...
2008 GMC Canyon | P060198 Ford Expedition P0155 Code Persists After Multiple Repairs
I'm still struggling to resolve the P0155 diagnostic trouble code on my 1998 Ford Expedition. I've already replaced the O2 sensor, fixed an exhaust leak, cleaned the EGR tubes a...
98 ford expedition | P01552004 Ford F150 P0053, P0132, P2195, P2196 Fault Codes & Transmission Slipping in Overdrive - OBDII Scanner Help
I own a 2004 Ford F15-0 with a 4.6L V8 engine, automatic transmission, 2WD, and has accumulated 227,000 miles. I recently purchased a new Cen-Tech (Harbor Freight) OBDII/EOBD sc...
2004 F150 | P00532001 Mitsubishi Montero Sport P0403 and P0403 Error Code Diagnosis
2001 Mitsubishi Montero Sport LS, 2-wheel drive, 6-cylinder engine, with 240,630 miles. Recently encountered OBD-II diagnostic codes P0403 and P0403. The vehicle exhibits reduce...
2001 Mitsubishi Montero Sport | P0403Bank 1 Sensor 2 High Voltage, 08 caliber
This code showed up about 2 weeks ago and since then i have replaced the sensor 3 times. 2 times with a bosh and once with an actual mopar one i got from a dealership. With th...
08 caliber | P01352001 Infiniti I30T P0505 Code: Idle Issues After IAC, TPS, MAF Replacement and ECM Update
I recently replaced the Idle Air Control Valve (IAC), Throttle Position Sensor (TPS), and Mass Air Flow (MAF) sensor on my 2001 Infiniti I30T. The vehicle's ECU was also updated...
2001 Infiniti I30T | P0505Aftermarket Exhaust Causes P0155 O2 Sensor Code on 2004 Chevrolet 2500 HD
I recently installed a DynoMax aftermarket cat-back exhaust system on my 2004 Chevrolet 2500 HD truck. Since the installation, the vehicle has started triggering a P0155 diagnos...
Unknown | P0155Practical 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.