Chrysler
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Reverse Gear Lockout Open or Shorted Conditions
Cause:
    Key on or engine running, then the test started and then the PCM detected a shorted or open condition in the reverse gear lockout circuit

Generic
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Reverse Inhibit Control Circuit

GM
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Reverse Inhibit Solenoid Control Circuit Conditions
Cause:
    Engine speed over 400 rpm, system voltage from 6-18v, then the PCM detected the Actual and Commanded state of the Reverse Inhibit solenoid circuit did not match, conditions met for 5 seconds