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Check Engine Light Codes

This page lists OBD-II generic powertrain trouble codes, a.k.a. engine codes. Why these codes? Well, these are the most common 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