PowertrainP2681

Caution

Severity: Caution - get it checked when you can

Engine Coolant Bypass Valve A Control Circuit/Open

29 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 engine cooling or temperature. Overheating can damage the engine.

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

Watch the temperature gauge. Stop safely and let the engine cool if the gauge climbs, steam appears, or a red warning light comes on.

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 29

Brand	Code	Description	System
Ashok Leyland CV	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
BAIC Motor	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Mercedes-Benz	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
BYD	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Chery	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Daewoo	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
DFFS	P2681	Heater bypass valve open Brand	Powertrain
DFFX	P2681	Heat air bypass valve open Brand	Powertrain
DFXK	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
EOBD	P2681	Kølevæskebypassventil 'A' styringskreds/åben Brand	Powertrain
Geely	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
GM	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Great Wall	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Hafei	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Holden	P2681	Engine Coolant Bypass Valve Control Circuit Brand	Powertrain
Honda	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
Hyundai	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
Land Rover	P2681	Engine coolant bypass valve control - circuit open Brand	Powertrain
Maserati	P2681	Engine Coolant Bypass Valve Control Circuit Open Brand	Powertrain
Mitsubishi	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
Opel	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Peugeot	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
Saab	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
MG (SAIC)	P2681	Engine Coolant Bypass Valve Control Circuit/Open Brand	Powertrain
Sprinter	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
Subaru	P2681	Engine Coolant Bypass Valve A Control Circuit/Open SAE	Powertrain
Suzuki	P2681	CCV Motor Circuit/Open Brand	Powertrain
Toyota	P2681	Heater bypass valve open Brand	Powertrain
Volkswagen	P2681	Control circuit for coolant bypass valve: open Cricuit 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 P2681 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P268100	Das Absperrventil der Heizungsanlage hat einen elektrischen Fehler oder Unterbrechung. Brand	Powertrain
Mercedes-Benz	P268113	Das Absperrventil der Heizungsanlage hat einen elektrischen Fehler oder Unterbrechung.Es liegt eine Unterbrechung vor. Brand	Powertrain

6Related codes

Browse Pxxx codes or P268xx codes.