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.
2002 Chevrolet Malibu P0446 EVAP System Leak - Evaporative Emission Valve Location and Diagnosis
Vehicle: 2002 Chevrolet Malibu Fault Code: P0446 Issue: The OBD-II diagnostic code P0446 indicates an EVAP system vacuum decay rate exceeding the threshold, which suggests a lea...
2002 chevrolet malibu | P0446P0420 Catalyst Efficiency Below Threshold (B1) - Nissan Sentra Power Loss Diagnosis and Repair Advice
I own a Nissan Sentra that has experienced a significant loss of power, especially on the highway. The OBD2 diagnostic system is showing fault code P0420 (Catalyst Efficiency Be...
Nissan Sentra | P0420OBD2 Code P0340 in 2005 Nissan Maxima: Camshaft Position Sensor A Bank 1 Fault and Performance Issues
Hello, I'm experiencing a persistent OBD2 fault code P0340 on my 2005 Nissan Maxima. The diagnostic trouble code indicates a 'Camshaft Position Sensor A - Bank 1 Circuit Malfunc...
Nissan | P0340Hyundai Accent 2005 P0122 Fault: TPS Sensor Issue with Recurring Stalling and Idle Problems
Hi everyone! I own a 2005 Hyundai Accent (99,000 km) with a 1.6L engine and automatic transmission. Three weeks ago, the check engine light came on, and I've been experiencing ...
Hyundai Accent 2005 | P01222005 Dodge Stratus 2.4L Engine P0016 Code: Diagnosis and Fix Guide
I've been experiencing a recurring P0016 code on my 2005 Dodge Stratus 2.4L engine. I've already checked the connectors for proper 5.0V signal and ground connection—both are con...
2005 Dodge Stratus 2.4 | P0016Kia Spectra 2005 2.0L Automatic - P2251 Error After Replacing Upper O2 Sensor
My Kia Spectra 2005 with a 2.0L automatic transmission originally showed error code P0171, which I resolved by replacing the upper pre-catalyst oxygen sensor. However, after the...
Kia Spectra | P22512003 GMC 5.3L Engine P0302 Flashing Misfire Code: Diagnosis and Fix
I own a 2003 GMC 5.3L V8 truck that sets up the P0302 flashing misfire code specifically when driving on highways at speeds between 50 to 60 mph. The check engine light flashes ...
GMC | P0302Audi A4 3.2L with P0172 and P0175 Codes: O2 Sensor or Fuel Pressure Regulator Fault?
Hello, I own a 2009 Audi A4 3.2L with persistent DTCs P0172 and P0175 indicating both Bank 1 and Bank 2 are running too rich. Previously, the vehicle had multiple misfire codes,...
Audi a4 3.2l | P0172P0113 Fault Causes A/C Compressor Shutdown in 2010 Ford E-350 5.4L Van?
Does a P0113 diagnostic trouble code on a 2010 Ford E-3
Unknown | P01132002 Pontiac 3800 V6 P0306 Misfire: Diagnosing After Replacing Fuel Pump, Plugs, MAF, Coil Pack, Injector and Filter
I'm experiencing a persistent P0306 misfire code on my 2002 Pontiac 3800 V6 engine. I've already replaced the fuel pump wires, spark plugs (AC Delco), MAF sensor, coil pack, fue...
2002 Pontiac 3800 | P0306P0138 and P0139 O2 Sensor Issues in Nissan Quest (174,000 Miles)
I have a 2015 Nissan Quest with 174,000 miles. I've been consistently receiving diagnostic codes P0138 and P0139, despite having replaced the oxygen sensors already. The issue p...
nissan quest | P01382007 Hyundai Santa Fe P0571 and P0504 Error: Brake Switch Circuit Issue with Cruise Control Failure
My 2007 Hyundai Santa Fe has reached 100,000 miles. Recently, the Check Engine light came on, along with the ESC Off warning light, which remains illuminated. Additionally, my c...
2007 Hyundai Santa Fe | P05041998 Accord LX 2.2L VTEC Manual Transmission - P0141 Code Recurring After Oxygen Sensor Replacement
I've been experiencing a recurring P0141 code on my 1998 Accord LX with the 2.2L VTEC engine and manual transmission. My catalytic converter is only about 5 months old, and both...
98 accord lx 2.2 vtech man trans | P01412001 Odyssey p0705
The code indicates that the transmission range sensor is faulty. However, when I search for "transmission range sensor" for this vehicle I get no returns. Is it called somethi...
2001 Odyssey | P0705U0100 and P1000 Fault Codes on 2006 Ford Fusion - OBD2 Inspection Failure in NJ
I've been experiencing U0100 and P1000 diagnostic trouble codes for over 2,500 miles. I used an OBD-II scanner to detect the U0100 code, but when I took the vehicle to the deale...
Ford Fusion | P10002001 Dodge Ram 1500 5.9L Auto - P1740 Code: TCC or OD Solenoid Issue - Safe Highway Drive for 1400 Miles?
I'm currently experiencing a P1740 diagnostic code on my 2001 Dodge Ram 1500 with a 5.9L V8 and automatic transmission. The code indicates a potential issue with either the Torq...
Dodge Ram 1500 | P17401999 Buick Lesabre P0300 Random Misfire: Diagnosing Without Replacing Control Module
I'm experiencing a random misfire on my 1999 Buick Lesabre, which has triggered a P0300 diagnostic code. I took the car to AutoZone, where they initially suggested replacing the...
1999 Buick Lesabre | P0300Practical 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.