OBD-II Codes
I have a code
Browse OBD-II codesDiagnose OBD-II codes, understand car symptoms, inspect repair issues, and verify used auto parts before you buy.
By brand
Start with your problem
Search results

If your Volkswagen EPC light is on and the engine shakes, you're likely facing one of three faults: an ignition coil misfire, a dirty or failing throttle body...
Latest resources
The latest 10 resources across OBD-II codes, car symptoms, repair guides, and driving guides.

In brief: If your car loses power going uphill but there is no Check Engine Light, the problem is usually related to fuel starvation or restricted exhaust flow...

Editorial illustration for Checking Vacuum Hoses.Editorial illustration for MAF Sensor vs Throttle Body Cleaner.

In brief: A rough idle with no check engine light does not automatically mean a bad sensor. Check for pending codes, vacuum leaks, dirty throttle body buildup...

Editorial illustration for Dirty hub face behind rotor.Editorial illustration for Caliper slide and brake hardware check.Editorial illustration for Driver...

In brief: P0128 means the engine is not reaching the expected coolant temperature quickly enough or is operating below the expected temperature range under...

Editorial illustration for Rotor and hub contact surface.Editorial illustration for Wheel bearing and hub check.Editorial illustration for Tire and suspension...

Triggering a P0101 code immediately after an air filter change is common and almost always due to forgetting to plug the MAF sensor back in, leaving a hose...

If the battery light stays on after replacing the alternator, the new alternator is not automatically bad. The fault may be a slipping belt, wiring issue, blown...

A P0455 code means your vehicle's computer has detected a gross leak in the EVAP system. It is generally safe for daily driving, but it should be addressed soon...

In brief: If a car starts with a jump and then dies again, the alternator or charging system is often suspect, especially if it dies soon after the jumper...
Seller onboarding
Bring your inventory to AutoPartWise with free onboarding support. Share your existing file and our team prepares your catalog for launch.
Built for dismantlers, recyclers, and parts sellers ready to launch inventory faster.