Acura OBD1 Codes

Acura vehicles 1986-95 obd1 code retrieval

source: http://www.extreme-check-engine-light-codes.com/Acura%20OBD1%20Decoder.htm

There are a few different ways to retrieve the codes for “check engine light” for Acura vehicles. One method is to use a led light (sometimes 2 led lights) on the computer or controller box itself. If it has 2 led lights, the color is red and amber. The red is used for flashing the codes whereas the amber is used for adjustment. If you have only a single led light indicator, then that is used for flashing the code.

The controller box can be found by lifting the carpet of the passenger side front foot well or floorboard. You can see the led lights without removing the controller. On other models, you can find the controller under the driver or passenger front seat.

Shown below is the actual OBD1 location:

The second way to get the code is using a jumper wire on the diagnostic connector located on the kick panel at the front passenger side. You then watch the codes being flashed at the dash panel after you turn the key on. To read the code being flashed is easy. Example: Code 23 is 2 long flashes followed by 3 short flashes. A longer pause separates the next code that follows.

Any Acura Vehicles made before 1995 as shown below can use OBD1 testing system

Here are Acura vehicles 1986-95 general codes:

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

Code 8 Crank angle sensor (TDC)

Code 9 Crank angle sensor (CLY)

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 supply system