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.
P0440 Fault on 2003 Pontiac Sunfire: Gas Cap or Evaporative System Issue?
I've been experiencing a persistent P0440 diagnostic code on my 2003 Pontiac Sunfire since June 2006. I visited the dealership three times, and each time the technician used a s...
Sunfire | P04402001 Nissan Maxima P0100 MAF or VAF A Circuit Malfunction - Diagnosis and Repair Guide
HELP!!! My 2001 Nissan Maxima runs smoothly when idle, but after starting, the check engine light comes on and the vehicle runs roughly under increased RPMs. The diagnostic sca...
2001 Maxima | P01001996 Dodge Intrepid 3.3L misfire
daughter's car started acting up today. flashing check engine light, minor miss felt at idle, driving generally seems OK. diagnostic check at autozone revealed 300 code for mult...
1996 Dodge Intrepid | P03002003 VW TDI P0671 Code: What Does It Mean and How to Fix It?
I'm experiencing a check engine light on my 2003 VW TDI, with the fault code P0671 appearing. The vehicle runs normally, but I'd like to understand what this code means before t...
2003 VW TDI | P0671Nissan Almera 2.2TD Fault Code P1251 P4-SPILL/V CIRC - Engine Won't Start
I own a 2000 Nissan Almera diesel model with a 2.2-liter 2,2TD engine. Suddenly, the vehicle stopped running without any warning signs. I am unable to start it — the engine turn...
nissan almera 2,2TD | P1251P0300 and P1406 Error Codes on 1995 Chevrolet Blazer: Diagnosis and Fixes
I own a 1995 Chevrolet Blazer with two persistent error codes: P0300 (Random/Multiple Cylinder Misfire Detected) and P1406 (Manufacturer Control Auxiliary Emission Controls). Th...
95 Blazer | P0300P0420 Fault Code on 2003 Toyota Camry: Causes and Solutions
I've reviewed several discussions about the P0420 code, but I believe my issue may not be related to the oxygen sensor. When I start my car after it has been sitting for a while...
Toyota Camry | P0420P1400 Diagnostic Code on 2000 Dodge Stratus ES: Meaning, Causes, and Troubleshooting
I need help interpreting diagnostic code P1400 on my 2000 Dodge Stratus ES. I've searched online but can't find clear information about this specific code. Does P1400 relate to ...
dodge stratus | P14001999 Honda Accord EX Check Engine Code P1167: Primary HO2S Heater System Fault
My 1999 Honda Accord EX is displaying check engine light with fault code P1167 and flash code 41. According to the OEM definition, this indicates a problem with the Primary Oxyg...
1999 Honda Accord EX | P11671997 Ford f-150 codes P0171 & P0174
I have a Ford F-150, 4.2L, V6, with about 141,000 miles on it. I replaced the sparks plugs and wires because it had not been done in a year and a half, and the truck was starti...
1997 Ford f-150 | P0171Mazda MPV 2000 P0455 EVAP System Leak - Check Engine Light On, Gas Cap Fix, Cost Comparison & Serpentine Belt Concern
My Mazda MPV 2000 has been showing error code P045- EVAP Emission Control System Leak (Large) since August. The check engine light remains on consistently whenever I take it to ...
Mazda MPV 2000 | P0455Ford F150 Code P1451: How to Fix Evap System Fault After Replacing Gas Cap and Solenoid
I recently received a Diagnostic Trouble Code (DTC) P1451 on my Ford F150, which relates to the evaporative emission control system. I've already replaced the gas cap and the ca...
Ford F150 | P1451P0460 Fuel Level Sensor Fault on 1998 Ford F150: Diagnosis and Solutions
I received a P0460 diagnostic trouble code approximately one month ago on my 1998 Ford F150. I recently replaced the entire fuel level sending unit, including the tank-mounted f...
1998 Ford F150 | P0460P0741 Diagnostic and Fix for 1998 Saab 900SE Turbo - CEL and Gearbox Light On
I'm seeking help diagnosing a P0741 fault code on my 1998 Saab 900SE Turbo. Both the Check Engine Light (CEL) and the Gearbox Warning Light are currently illuminated. The code w...
Saab 900se turbo | P0741P0135 and P0155 Fault Codes in 2001 Chevrolet Camaro Z28 with LS1 Edit (No Catalytic Converters)
I own a 2001 Chevrolet Camaro Z28 equipped with an LS1 engine modified using LS1 Edit. This modification has disabled two of the four oxygen (O2) sensors, as no catalytic conver...
01 Z28 | P0135P0171 and P0421 on 97' Mazda 626
Hi there, Last week I bought used Mazda 626 from 97, 2.0L, automatic transmission and about 97 Km. There were two things wrong I knew while buying, first, the exhaust muffler sh...
97' Mazda 626 | P01712002 Chevrolet Trailblazer P0440 and P0452 Error Code Solutions at 52k Miles
I own a 2002 Chevrolet Trailblazer with 52,000 miles and it's currently displaying diagnostic trouble codes P0440 and P0452. What steps should I take to diagnose and fix these i...
2002 Trailblazer | P0440Practical 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.