Generic
Type:
    Powertrain - Computer and Auxiliary Outputs - ISO/SAE Controlled
Description:
    Engine RPM Output Circuit

GM
Type:
    Powertrain - Computer and Auxiliary Outputs - ISO/SAE Controlled
Description:
    Engine Speed Output Control Circuit
Cause:
    Engine speed over 600 rpm, then the PCM detected that the Commanded state of the Engine Speed Output circuit did not match the Actual state for a period of 10 seconds.