Error P0646

P0646

Technical Definition:

Air Conditioning (A/C) Clutch Relay Control Circuit Low

Trouble Code: P0646
Address: 0x0646
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Technical Description:

Possible Causes:

Possible Symptoms:

Air Conditioning Clutch Relay Circuit Low

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Air Conditioning Clutch Relay
– Air Conditioning Clutch Relay harness is open or shorted
– Air Conditioning Clutch Relay circuit poor electrical connection

Specific Makes: