Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) ECC-121 is stored if the ECC control module detects that the outside temperature sensor signal is missing or that there is a short-circuit to ground in the signal cable.

Possible source
- Open-circuit in outside temperature sensor or signal cable.
- Short-circuit to ground in the signal cable.

Fault symptom[s]
- Driver fault warning. The LEDs beside the A/C and REC switches flash for approximately 20 seconds.