U0165
Lost Communication With HVAC Control Module - Rear
U0165 is an OBD-II diagnostic trouble code meaning: Lost Communication With HVAC Control Module - Rear. Common causes: open or short circuit in wiring harness, poor contact in climate control module connectors. Estimated repair cost: $56–167.
Symptoms
- Rear climate control does not work
- Error messages may appear on the display
- Unable to adjust rear temperature
- Rear climate control fans do not turn on
- The Check Engine light may be on
Causes
- Open or short circuit in wiring harness
- Poor contact in climate control module connectors
- Rear climate control module malfunction
- Fuse or relay problems
- CAN bus fault
How to Fix
- Check fuses associated with the climate control system
- Inspect the wiring harness and connectors for damage.
- Check power and ground on the climate control module
- Scan other modules for communication errors
- If necessary, replace the rear climate control module
Related codes
Error U0165 by Vehicle Brand
FAQ
What does the U0165 code mean?
U0165 is an OBD-II diagnostic trouble code that indicates: Lost Communication With HVAC Control Module - Rear
What causes a U0165 error code?
The most common causes of U0165 include: Open or short circuit in wiring harness; Poor contact in climate control module connectors; Rear climate control module malfunction; Fuse or relay problems.
How do I fix a U0165 diagnostic trouble code?
To fix U0165: Check fuses associated with the climate control system. Inspect the wiring harness and connectors for damage.. Check power and ground on the climate control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0165?
Yes, but get it checked soon
How much does it cost to fix U0165?
The estimated repair cost for U0165 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat