How to retrieve Mitsubishi OBD1 (1996 and earlier) diagnostic trouble codes.
Step 1 - To gather troubles codes from the system locate the diagnostic data 12 port connector which is located under the dash by the kick panel on the driver's side.
Step 2 - Use an analog style of voltmeter (sweeper arm) set the voltmeter dial to continuity. Next, insert the positive lead into the number #1 terminal and the black or ground lead into the #12 terminal. Turn the ignition key to the "ON" position and observe the voltmeter needle sweeping from right to left. The first set of sweeps will be the first digit of the code followed by a second set of sweeps which will be the second digit. For example, if the meter sweeps twice and then pauses and then sweeps four more times, the code number would be 24.
Step 3 - To re-start code gathering simply turn the ignition key to the "OFF" position and then turn it back "ON" again. Once the repairs have been made, clear the codes by removing the negative battery cable for two minutes and then reconnect.
Trouble Codes OBD1
Code 11 Oxygen sensor fault
Code 12 Air flow sensor fault
Code 13 Intake temperature sensor
Code 14 Throttle position sensor fault
Code 15 SC Motor position sensor fault
Code 21 Engine coolant temperature sensor
Code 22 Crank angle sensor fault
Code 23 No.1 cylinder TDC sensor fault
Code 24 Vehicle speed sensor
Code 25 Barometric pressure sensor
Code 31 Knock sensor fault
Code 32 Manifold pressure sensor
Code 36 Ignition timing adjustment signal
Code 39 Oxygen sensor fault
Code 41 Injector fault
Code 42 Fuel pump fault
Code 43 EGR fault
Code 44 Ignition coil on 3.0L engines (1 and 2 cylinders)
Code 52 Ignition coil on 3.0L engines (2 and 5 cylinders)
Code 53 Ignition coil on 3.0L engines (3 and 6 cylinders)
Code 55 AV valve position sensor
Code 59 Heated oxygen sensor
Code 61 Transaxle control unit cable for automatic transmission
Code 62 Warm-up control valve position sensor