Diagnostic Trouble Codes - 1989
Mazda
| 1 | Ignition Pulse. |
| 8 | Air Flow Meter. |
| 9 | Water Thermo Sensor. |
| 10 | Intake Air Thermo Sensor (Air Flow Meter). |
| 12 | Throttle Sensor. |
| 14 | Atmospheric Pressure Sensor. |
| 15 | Oxygen Sensor. |
| 17 | Feedback System. |
| 25 | Solenoid Valve (PRC). |
| 26 | Solenoid Valve (Purge Control) . |
| 28 | Solenoid Valve (EGR). |
| 34 | Idle Speed Control Valve (ISC). |
| 40 | Oxygen Sensor Relay. |
NOTE: This method may only be applicable to systems with a test connector and a Malfunction Indicator Light (MIL) or check engine light.
- Ground the test connector (1 pin wire) with a jumper wire.
NOTE: The connector is located next to the Self-Diagnostic Connector.
- Turn the ignition switch to the ON position.
- If check engine light illuminates, goes off, and stays off no codes are present.
- If check engine light illuminates, goes off, and then starts flashing, codes are present.
- Count the flashes to determine the fault code.
Code Interpretation:
- For single digit codes, short quick flashes will be displayed. For example code 8 is 8 quick flashes followed by a pause and either the next code or repeating the previous code.
- For double digit codes the first digit is a longer flash (more time in between flashes) followed by the second digit, a short quick flash. For example code 24 is 2 long flashes followed by 4 quick flashes and a pause for the next code or repeat of the previous code.