P1600 AUDI, SUZUKI, VOLKSWAGEN: ENGINE CONTROL MODULE SUPPLY VOLTAGE LOW FROM IGNITION SWITCH
POST UPDATED IN February, 2023
P1600 AUDI, SUZUKI, VOLKSWAGEN: ENGINE CONTROL MODULE SUPPLY VOLTAGE LOW FROM IGNITION SWITCH
The ECM (Engine Control Module) is a controller that can be named as an analysis unit, which receives and processes data from the engine, brake, transmission, suspension, and other electrical systems. To carry out all these supervisions, the module is aided by sensors and other electrical devices. They inform in real-time about the behavior of the monitored components.
The Engine Control Module receives positive voltage from the battery even when the ignition switch is off. This is used for the DTC memory and adaptive air/fuel ratio control value memory. In case some problems are found with the positive battery voltage, the fault code P1600 OBDII will be stored.
The P1600 OBD2 diagnostic code is stored for the following reasons:
To troubleshoot the P1600 OBDII DTC, follow these suggestions: