Chevrolet P1605: Lost Communications with HVAC Control System
Is your scanner showing Chevrolet P1605?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1605: Lost Communications with HVAC Control System
OVERVIEWWhat Does The Chevrolet P1605 Code Mean?
The ignition is ON. The system voltage is more than 8.2 volts.
How Can You Fix The Chevrolet P1605 Code?
Inspect for the following conditions: Many situations may lead to an intermittent condition. Perform each inspection or test as directed.
Important: Remove any debris from the connector surfaces before servicing a component. Inspect the connector gasket.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> KAIWEETS Digital Multimeter
>>> HVAC Blower Motor Control Module Resistor Kit With Harness 15-81773 19260762
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
GM, 2013, Service Bullettin – Prior To Any Circuit Testing.
