PowertrainP0647

Serious

Severity: Serious - have it checked soon

A/C Clutch Relay Control Circuit High

35 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

The engine computer or one of its output circuits has a fault.

2Common causes

Engine control module fault
Power or ground connection problem
Low battery or charging voltage
Wiring short or open circuit
Software or memory fault

3Can I drive?

Serious · drive with care

If the engine runs normally, drive carefully to a workshop for diagnosis. If it runs badly, stalls, or will not restart, have the car towed.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 35

Brand	Code	Description	System
Ashok Leyland CV	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
BAIC Motor	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
Mercedes-Benz	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
BMW	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
BYD	P0647	A/C allowed control circuit high Brand	Powertrain
Chery	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
Daewoo	P0647	A/C Relay Voltage High Brand	Powertrain
DFFS	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
DFFX	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
DFXK	P0647	A/C clutch high voltage short Brand	Powertrain
EOBD	P0647	A/C clutch relékontrollkrets høy Brand	Powertrain
Geely	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
GM	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
Great Wall	P0647	A/C compressor short to battery Brand	Powertrain
Hafei	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
Holden	P0647	Air Conditioning (A/C) Compressor Clutch Relay Control Circuit High Voltage Brand	Powertrain
Honda	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
Hyundai	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
Isuzu	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
Land Rover	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
Maserati	P0647	Air Conditioning Control Circuit High Brand	Powertrain
Mitsubishi	P0647	A/C power supply relay high Brand	Powertrain
Opel	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
Peugeot	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
Porsche	P0647	Relais Klimaanlage - max Brand	Powertrain
Proton	P0647	A/C power supply relay high Brand	Powertrain
Saab	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
MG (SAIC)	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
Sprinter	P0647	A/C Clutch Relay Control Circuit High SAE	Powertrain
SsangYong	P0647	Air conditioner compressor relay circuit short to battery (+) Brand	Powertrain
Suzuki	P0647	A/C Clutch Relay Control Circuit High Brand	Powertrain
SWM Motor	P0647	A/C relay short circuit to high voltage Brand	Powertrain
Tata	P0647	A/C Clutch Relay Short To Battery Brand	Powertrain
Toyota	P0647	A/C clutch relay short to high voltage Brand	Powertrain
Volkswagen	P0647	AC Clutch Relay Control Circuit High Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P0647 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	P064700	is set when excessive current is detected in Aircon relay control circuit for more than 1 sec. This code is due to short to battery in Aircon relay control circuit or internal short in relay component Brand	Powertrain

6Related codes

Browse Pxxx codes or P064xx codes.