Welcome to Check-Engine-Light.com

Welcome. Is your car's Check Engine Light on? Do you need help figuring out what to do next? If so, then this site is for you.

NEW: We now field your car repair questions and post the answer for everyone to see.
- Ask a check engine light / car repair question now (FREE)
- Browse the list of questions and answers already answered

To view answers specific to your car, truck, van, or SUV, choose your vehicle make below. If yours isn't listed, submit your check engine question now. If you know the trouble code, then scroll down for the list of OBD-II generic powertrain trouble codes.

More to come...

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We're going to provide help with plenty of car repair problems. In the meantime, here's the list of generic OBD-II trouble codes:

OBD-II Diagnostic Trouble Codes (DTC)

This list contains standard diagnostic trouble codes (DTC’s) that are used by some manufacturers to identify vehicle problems. The codes provide below are generic codes that may not apply to all vehicles. Vehicle manufacturers may use manufacturer specific DTC codes that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes. We recommend that you not depend on the DTC codes in this list for vehicle repairs until you confirm the generic DTC codes apply to your vehicle(s). The list below is for information purposes only and is not intended for use in vehicle repairs.

Please note that if a code below is linked to another page that is because we have discussed that code in answering a question. If the code you have is linked below, click the link and read the page.

P0010-P0099 – Fuel and Air Metering and Auxiliary Emission Controls

DTC Codes - P0100-P0199 – Fuel and Air Metering

DTC Codes - P0200-P0299 – Fuel and Air Metering (Injector Circuit)

DTC Codes - P0300-P0399 – Ignition System or Misfire

DTC Codes - P0400-P0499 – Auxiliary Emissions Controls

DTC Codes - P0500-P0599 – Vehicle Speed Controls and Idle Control System

DTC Codes - P0600-P0699 – Computer Output Circuit

DTC Codes - P0700-P0899 – Transmission