Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    CAN data bus, AC - no signal
Cause:
    AC control module trouble code(s) stored, wiring, matching resistor in ECM

Ford
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Tire Axle/Ratio Out of Acceptable Range Conditions
Cause:
    Engine running and the PCM detected that the tire and axle information in the VID Block does not match the vehicle hardware

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    5-Volt Reference Circuit Low Conditions
Cause:
    Key on, then the PCM detected that the 5-volt reference circuit input was less than 4.0v (the circuit is monitored continuously)

Honda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Sensor supply voltage - circuit 1 malfunction
Cause:
    Wiring short circuit to ground/positive, ground wiring open circuit, ECM

Isuzu
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Sensor supply voltage - circuit A malfunction
Cause:
    Wiring short circuit to ground/positive, ground wiring open circuit, ECM

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    CAN data bus, AC - no signal
Cause:
    AC control module trouble code(s) stored, wiring, matching resistor in ECM