U0164 code: Lost Communication With HVAC Control Module
Code U0164 is named in 9 US owner complaints. Models: 8, model years 2006–2023.
What the code means
Lost Communication With HVAC Control Module. Generic meaning per SAE J2012 (the same for all makes).
How to read U0164: the letter U means network communication between modules; the second digit 0 marks a generic SAE code shared by all makes; the last three characters 164 identify the specific fault.
Codes for body, door, climate, instrument cluster and infotainment modules. On a damaged car they often point to wiring or a connector damaged in the impact zone, or to water inside.
Key figures
- Complaints with this code
- 9
- Models
- 8
- Model years
- 2006–2023
Which models and years
Models whose owners name this code (8). Years link to the model year problems page.
Components named together with the code
Component as the owner filed it (one complaint can list several).
Complaints by model year
What to do if an auction car has this code
- Check wiring and connectors in the impact zone and signs of water inside.
What owners report
Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.
This creates risk from loss of all electronic safety assists in traffic and from the vehicle failing to start when needed. Stored codes show lost CAN communication among multiple modules: U0101, C1611, C1693, U0111, U0164, U0293, U042B, U1341. Confirmed by two Kia dealerships over five warranty visits.
While driving I will get a wrench symbol with a bunch of codes pop up U0121:00:28 U0131:00:28 U0137:00:28 U0164:00:28 U0199:00:28 U0200:00:28 U0212:00:28 U0252:00:28 U0256:00:28 U1012:00:28 P0557:00:28 P1935:00:68 P193E:00:28 I have also had it jerk while driving ( went down into first gear) while having no power to…
The contact stated that while driving at an undisclosed speed, the Auto Hold feature activated, and the check engine warning light and several other unknown warning lights illuminated. The vehicle was taken to an independent mechanic, and DTCs U0164, U0123, U01B0, and U1131 were retrieved.
Related codes
- U0155Lost Communication With Instrument Panel…
- U0423Invalid Data Received From Instrument Panel…
- U0184Lost Communication With Radio
- U0199Lost Communication With Door Control Module A
- U0253Lost Communication With Accessory Protocol…
- B0113Camera Washer Actuator K
- U0198Lost Communication With Telematic Control Module
- U0200Lost Communication With Door Control Module B
- U0256Lost Communication With Front Controls…
Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.