There are a couple of different ways to gather trouble codes for "check engine" light for Acura cars. The most common method is to use the led light (sometimes 2 lights) on the side of the computer itself. These color are red and amber in most cases. The red light is used for flashing codes and the amber light is used for adjustments. If the single led light indicator is the only one present it is used for flashing trouble codes. The computer is located under the carpet on the passengers side in the front floorboard. You may need to remove the mounting bracket if you can't see the led lights. On some models the controller is located under the driver's or passenger's front seat.

A secondary method to retrieve codes is using a jumper wire on the diagnostic connector located at the panel by the front passenger side foot well. Next turn the key to the "on" position without cranking the engine over. Watch the flashed light on the PCM. count the flashing light to decode the trouble code number. Example: Code 21 is 2 long light flashes followed by 1 short light flash. A long pause between the short flashes separates the next code digit that follows.

Code Definition Table:

Code 0 - Electronic control unit (ecu)

Code 1 - 02 (oxygen) sensor

Code 3 and 5 - Map sensor

Code 4 - Crank angle sensor

Code 6 - Coolant temperature sensor

Code 7 - Throttle angle sensor TPS

Code 8 - Crank angle sensor (CKP)

Code 9 - Cam angle sensor (CAS)

Code 10 - Intake air temperature sensor

Code 12 - EGR system fault

Code 13 - Atmospheric pressure sensor

Code 14 - Electronic air control valve

Code 15 - Ignition output signal

Code 16 - Fuel injector fault

Code 17 - Vehicle speed sensor

Code 21 - Spool solenoid valve

Code 22 - Valve timing oil pressure switch fault

Code 23 - Knock sensor

Code 41 - Oxygen sensor heater fault

Code 43 - Fuel pump supply system

If further technical assistance is needed, our certified car repair technicians are ready to answer your car questions.

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