Non-Turbo Models

The on-board diagnostics system detects and stores in the form of a code a fault that has occurred in any of the following input and output signal systems.

Fig 1: On-Board Diagnostics System Chart - Non-Turbo Models

Courtesy of SUBARU OF AMERICA, INC.

If a fault has been detected, the system tells the fault by causing the AT OIL TEMP warning light to operate as follows:

• Repeated flashing at 4 Hz frequency ... Errors such as battery trouble
• Repeated flashing at 2 Hz frequency ... No faults in the system
• Flashing at different intervals and frequencies ... Diagnostic trouble codes of corresponding faults
• Continued illumination of light ... Fault in inhibitor switch, idle switch, or wiring