HEA-821
Diagnostic Trouble Code (DTC) Information
Condition
A diagnostic trouble code (DTC) is stored if there is a short-circuit to supply voltage in the water pump circuit.
Condition
- Any engine block heater function will be shut down.
Possible source
- Short-circuit to supply voltage in signal cable.
- Defective water pump.
Condition
- Engine block heater not working.
- Poor heating in passenger compartment.