Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) ECM-531D is stored if the central electronic module (CEM) (driver information module for the C70) detects a fault in the engine control module (ECM) software (incorrect check sum).

Substitute value
none

Possible source
- fault in engine control module (ECM)
- changed software in engine control module (ECM)
- defective engine control module (ECM).

Fault symptom[s]
- varies depending on the type of fault.