PowertrainP065B

Serious

Severity: Serious - have it checked soon

Generator electrical fault

28 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 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 28

Brand	Code	Description	System
Ashok Leyland CV	P065B	No description available	Powertrain
BAIC Motor	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Mercedes-Benz	P065B	No description available	Powertrain
BYD	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Chery	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Daewoo	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
DFFS	P065B	Generator electrical fault Brand	Powertrain
DFFX	P065B	Intelligent generator line failure Brand	Powertrain
DFXK	P065B	(LIN message) smart generator circuit fault Brand	Powertrain
EOBD	P065B	Generator 'A' styrkretsområde/prestanda Brand	Powertrain
Geely	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
GM	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Great Wall	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Hafei	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Holden	P065B	Generator Brand	Powertrain
Hyundai	P065B	No description available	Powertrain
Isuzu	P065B	No description available	Powertrain
Land Rover	P065B	No description available	Powertrain
Maserati	P065B	Generator control circuit performance Brand	Powertrain
Mitsubishi	P065B	No description available	Powertrain
Opel	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Peugeot	P065B	No description available	Powertrain
Saab	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P065B	Generator Control Circuit Range/Performance Brand	Powertrain
Sprinter	P065B	No description available	Powertrain
Suzuki	P065B	Generator Control Circuit Range / Performance Brand	Powertrain
Tata	P065B	No description available	Powertrain
Toyota	P065B	Generator electrical fault 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 6

These 7-character codes are manufacturer-specific variants of P065B and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P065B00	Der Generator hat Funktionsstörung. Brand	Powertrain
SsangYong	P065B00	Alternator output voltage error Brand	Powertrain
Mercedes-Benz	P065B04	The alternator has a malfunction. There is an internal fault. Brand	Powertrain
Mercedes-Benz	P065B13	Der Generator hat Funktionsstoerung. Es liegt eine Unterbrechung vor. Brand	Powertrain
Mercedes-Benz	P065B16	The alternator has a malfunction. The limit value for electrical voltage has not been attained. Brand	Powertrain
Mercedes-Benz	P065B17	The alternator has a malfunction. The limit value for electrical voltage has been exceeded. Brand	Powertrain

6Related codes

Browse Pxxx codes or P065xx codes.