Possible Causes

Electrical Cause
- Yes
Mechanical Cause
- No
Purpose of the DTC
To diagnose a failure in the communications between the ignition control module and the main CPU (internal to the powertrain control module)
Prioritized List of Possible Causes
The powertrain control module has determined failures where some circuit quantity, reported through serial data, is above a specified range
Other related Diagnostic Trouble Code(s)
Power and ground connections to the powertrain control module open circuit
Powertrain control module failure