ECC-121

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.

Condition

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