U0664 - Lost Communication With Rear HVAC Air Cutoff Actuator
U0664 is a generic network/communication diagnostic trouble code indicating Lost Communication With Rear HVAC Air Cutoff Actuator. It relates to the System-Specific system.
DTC Breakdown (SAE J2012)
| System | Network/Communication (U) |
| Type | Generic |
| Subsystem | System-Specific |
| Fault Index | 64 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code U0664 mean?
The dtc/">diagnostic trouble code U0664 represents Lost Communication With Rear HVAC Air Cutoff Actuator. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
Detailed diagnostic guides and specific fix procedures for code U0664 are currently being compiled. Always verify check engine warnings with a qualified mechanic.
Frequently Asked Questions about U0664
What does U0664 mean?
The diagnostic trouble code U0664 represents Lost Communication With Rear HVAC Air Cutoff Actuator. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
What is the system for U0664?
The U0664 code is located in the vehicle's Network/Communication network.