PowertrainP068B

Serious

Severity: Serious - have it checked soon

ECM/PCM Power Relay De-Energized Performance Too Late

31 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

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 31

Brand	Code	Description	System
Ashok Leyland CV	P068B	No description available	Powertrain
BAIC Motor	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
BYD	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Chery	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Daewoo	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
DFFS	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
DFFX	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
DFXK	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
EOBD	P068B	ECM/PCM strømrelé frakoblet ytelse - for sent Brand	Powertrain
Geely	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
GM	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Great Wall	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Hafei	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Holden	P068B	Engine Controls Ignition Relay De-Energized Too Late Brand	Powertrain
Honda	P068B	No description available	Powertrain
Hyundai	P068B	No description available	Powertrain
Isuzu	P068B	No description available	Powertrain
Land Rover	P068B	ECM/PCM Power Relay De-Energized Performance - Too Late Brand	Powertrain
Mahindra	P068B	No description available	Powertrain
Maserati	P068B	Engine Control Module Power De-Energized Performance - Too Late Brand	Powertrain
Mitsubishi	P068B	Main relay opens too late Brand	Powertrain
Opel	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Peugeot	P068B	No description available	Powertrain
Porsche	P068B	No description available	Powertrain
Proton	P068B	Main relay opens too late Brand	Powertrain
Saab	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
MG (SAIC)	P068B	ECM Power Relay De-energised Performance - Too Late Brand	Powertrain
Suzuki	P068B	ECM/PCM Power Relay De-Energized Performance – Too Late Brand	Powertrain
Tata	P068B	No description available	Powertrain
Toyota	P068B	ECM/PCM Power Relay De-Energized Performance Too Late Brand	Powertrain
Volkswagen	P068B	ECM power relay load circuit: (J271): De-Energized performance too Late; Short to ground 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 2

These 7-character codes are manufacturer-specific variants of P068B and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P068B71	Das Relais 'Klemme 87 (Verbrennungsmotor)' hat zu spät abgeschaltet. Das Stellglied ist blockiert. Brand	Powertrain
Sprinter	P068B71	Das Relais 'Klemme 87 (Verbrennungsmotor)' hat zu spät abgeschaltet. Das Stellglied ist blockiert. Brand	Powertrain

6Related codes

Browse Pxxx codes or P068xx codes.