DTC 42

DTC 42 Engine Control System Malfunction

Code 42: Engine Control System Malfunction DTC Chart:

Engine Control System Malfunction Wiring Diagram:

Engine Control System Malfunction Inspection Procedure:

CIRCUIT DESCRIPTION
If trouble in the engine control system causes the malfunction indicator light to light up, this information is transmitted from the ECM to the throttle control ECU. The throttle control ECU may prohibit TRAC control as a result.