PCM Failure SPI Communications

Name of code: PCM Failure SPI Communications

When monitored: With the ignition on.

Set condition: Serial communications inside the controller fail eight times during a run cycle.

Theory of operation: Communications between microprocessors inside the Powertrain Control Module (PCM) are needed to operate the total system. If failure occurs, the solenoids and relays may not actuate properly.

Possible causes:

- PCM failure