C056D Code: Meaning, Causes, and Symptoms | OBD2 Codes
C056D – Electronic Control Unit Hardware
C056D Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C056D Possible Causes
Faulty Electronic Control Unit,Electronic Control Unit harness is open or shorted,Electronic Control Unit circuit poor electrical connection
The internal fault detection is handled inside the control module. The symptom byte listed in the DTC Descriptor is for engineering reference only. No external circuit diagnosis is involved.