U0164
Lost Communication With HVAC Control Module
U0164 is an OBD-II diagnostic trouble code meaning: Lost Communication With HVAC Control Module. Common causes: broken or damaged wires, hvac module fuse blown. Estimated repair cost: $17–222.
Symptoms
- The air conditioning system does not work
- No indication on HVAC display
- The fan does not turn on
- Climate control buttons do not respond
- Check Engine light comes on
Causes
- Broken or damaged wires
- HVAC module fuse blown
- Climate control module malfunction
- Problems with the CAN bus
- Poor contact in connectors
How to Fix
- Check HVAC module fuses
- Inspect the wiring harness for damage
- Check the module supply voltage
- Scan the CAN bus for errors
- Replace HVAC module if necessary
Related codes
Error U0164 by Vehicle Brand
FAQ
What does the U0164 code mean?
U0164 is an OBD-II diagnostic trouble code that indicates: Lost Communication With HVAC Control Module
What causes a U0164 error code?
The most common causes of U0164 include: Broken or damaged wires; HVAC module fuse blown; Climate control module malfunction; Problems with the CAN bus.
How do I fix a U0164 diagnostic trouble code?
To fix U0164: Check HVAC module fuses. Inspect the wiring harness for damage. Check the module supply voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0164?
Yes, but get it checked soon
How much does it cost to fix U0164?
The estimated repair cost for U0164 is $17–222. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat