PowertrainP0C66

Caution

Severity: Caution - get it checked when you can

Generator position sensor circuit 'A' low

20 brands affected · Description from Toyota data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

Safety: This code relates to the charging system. The battery may go flat and the car may stall.

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
Control module fault

3Can I drive?

Caution · drive with care

The electrical system may fail and the battery may go flat, risking a stall. If the battery or charging warning light is on, drive straight to a workshop.

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 20

Brand	Code	Description	System
Ashok Leyland CV	P0C66	No description available	Powertrain
BAIC Motor	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
BYD	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
Chery	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
DFFS	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
DFFX	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
DFXK	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
EOBD	P0C66	Generatorlägesgivarkrets 'A' låg Brand	Powertrain
Geely	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
GM	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
Great Wall	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
Hafei	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
Hyundai	P0C66	No description available	Powertrain
Isuzu	P0C66	No description available	Powertrain
Land Rover	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
Peugeot	P0C66	No description available	Powertrain
Saab	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
MG (SAIC)	P0C66	Generator Position Sensor Circuit 'A' Low Brand	Powertrain
Subaru	P0C66	No description available	Powertrain
Toyota	P0C66	Generator position sensor circuit 'A' low 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 P0C66 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P0C6600	Generator Position Sensor Circuit 'A' Low. Brand	Powertrain

6Related codes

Browse Pxxx codes or P0C6xx codes.