This DTC is set if an INTE (Internal Event) code has been registered.
â–¶ How to fix
None. This DTC should not be enabled for production SW.
What you'll see
No driver-visible symptom recorded.
System reaction
Unknown.
Diagnostic depth
Detection
The climate control system (E138) has detected that its software or hardware is not performing correctly. The test is performed continuously.
Possible cause
INTE codes are used during software and hardware development of the climate control system, to find design flaws. All such flaws should have been found and corrected during development, but apparently this one hasn't.