P0647 Code - Air Conditioning Clutch Relay Circuit High

What Does P0647 Mean?

The P0647 code is a generic OBD-II trouble code that detects a problem with the A/C (air conditioning) clutch relay control circuit. The A/C clutch relay control circuit sends information to the powertrain control module (PCM), and many other control modules, such as the anti-lock brake control module, traction control module, climate control module, and instrument panel control module. When the PCM or one of the other control modules identifies that the A/C clutch relay control circuit is malfunctioning, the P0647 code will be triggered.

engine code P0647	P0647 fix	obd P0647	dtc P0647
obd code P0647	obd2 P0647	P0647 car code	diagnostic code P0647
car code P0647	check engine code P0647	fehlercode P0647	P0647 fiat
codigo P0647	codigo falla P0647	P0647 kody b??dów	codigo de falla P0647

What are the common causes of P0647 ?

The most likely cause of this code being stored is a defective a/c compressor control relay or a/c compressor driver in the PCM. Most a/c relay control circuits are integrated into the PCM. Other causes may include corroded, open, or shorted wiring or connectors in the CAN Bus harness, a loose control module ground strap or broken ground wire, the CAN bus may also be defective.



How do you troubleshoot P0647 ?

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Searches related to P0647 Code - Air Conditioning Clutch Relay Circuit High

• P0647
• P0648