U0164
Lost Communication with HVAC Control Module
1995-2005 Pontiac Sunfire 2.2L I4
Low SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the climate control module.
Symptoms
- Climate control not working
- No A/C
- Fan not responding
Common Causes
- HVAC module failure
- Fuse
- CAN bus
- Wiring
Diagnostic Steps
- Check fuses
- Test power
- Check CAN wiring
Repair Notes
Check fuses and power supply.
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0164 on Other Vehicles
Pontiac Aztek
2001-2005 3.4L V6
Pontiac Bonneville
1990-1999 3.8L V6
Pontiac Bonneville
2000-2005 3.8L V6
Pontiac Bonneville GXP
2000-2005 4.6L V8
Pontiac Bonneville GXP
2000-2005 4.6L V8 Northstar
Pontiac Bonneville SSEi
1992-1999 3.8L Supercharged V6
Pontiac Bonneville SSEi
1992-1999 3.8L V6 Supercharged
Pontiac Firebird
1993-1997 3.4L V6
Common Questions
What does code U0164 mean on a 1995-2005 Pontiac Sunfire?
U0164 stands for "Lost Communication with HVAC Control Module". Cannot communicate with the climate control module.
What are the symptoms of U0164 on a Pontiac Sunfire?
Common symptoms of U0164 include: Climate control not working, No A/C, Fan not responding.
What causes U0164 on a 1995-2005 Pontiac Sunfire?
Common causes of U0164 include: HVAC module failure, Fuse, CAN bus, Wiring.