PowertrainP0637

Serious

Severity: Serious - have it checked soon

Power Steering Control Circuit High

23 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

Safety: This code relates to the steering system. Power steering assistance may be reduced or fail.

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 23

Brand	Code	Description	System
Ashok Leyland CV	P0637	Power Steering Control Circuit High SAE	Powertrain
BAIC Motor	P0637	Power Steering Control Circuit High Brand	Powertrain
BMW	P0637	Power Steering Control Circuit High Brand	Powertrain
BYD	P0637	Power Steering Control Circuit High Brand	Powertrain
Chery	P0637	Power Steering Control Circuit High Brand	Powertrain
Daewoo	P0637	Power Steering Control Circuit High Brand	Powertrain
DFFS	P0637	Power Steering Control Circuit High Brand	Powertrain
DFFX	P0637	Power Steering Control Circuit High Brand	Powertrain
DFXK	P0637	Power Steering Control Circuit High Brand	Powertrain
EOBD	P0637	Servolenkungssteuerkreis zu hoch Brand	Powertrain
Geely	P0637	Power Steering Control Circuit High Brand	Powertrain
GM	P0637	Power Steering Control Circuit High Brand	Powertrain
Great Wall	P0637	Power Steering Control Circuit High Brand	Powertrain
Hafei	P0637	Power Steering Control Circuit High Brand	Powertrain
Hyundai	P0637	Power Steering Control Circuit High SAE	Powertrain
Isuzu	P0637	Power Steering Control Circuit High SAE	Powertrain
Land Rover	P0637	Power steering control - circuit high Brand	Powertrain
Peugeot	P0637	Power Steering Control Circuit High SAE	Powertrain
Saab	P0637	Power Steering Control Circuit High Brand	Powertrain
MG (SAIC)	P0637	Power Steering Control Circuit High Brand	Powertrain
Tata	P0637	Power Steering Control Circuit High Brand	Powertrain
Toyota	P0637	ECU internal fault (left front airbag ignition system) Brand	Powertrain
Volkswagen	P0637	SAE: Power Steering 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.

5Related codes

Browse Pxxx codes or P063xx codes.