PowertrainP2311

Serious

Severity: Serious - have it checked soon

Vacuum pump is damaged or leaking rapidly

26 brands affected · Description from Toyota data.

Key terms: Boost pressure: extra air pressure made by a turbo or supercharger · Powertrain: engine, transmission and emissions

Safety: This code relates to the braking system or brake assist. Braking may be affected.

1What it means in plain English

The brake vacuum pump is damaged or leaking rapidly, so brake assistance may be lost.

2Common causes

Damaged vacuum pump
Split or disconnected vacuum hose
Faulty vacuum sensor
Worn pump seal
Brake booster fault

3Can I drive?

Serious · drive with care

Brakes may need a lot more pedal effort or assistance may be lost. Do not drive until it is checked; if the pedal feels hard, stop safely and have the car recovered.

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 26

Brand	Code	Description	System
Ashok Leyland CV	P2311	No description available	Powertrain
BAIC Motor	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Mercedes-Benz	P2311	No description available	Powertrain
BYD	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Chery	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Daewoo	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
DFFS	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
DFFX	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
DFXK	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
EOBD	P2311	Tändspole 'D' sekundärkrets Brand	Powertrain
Geely	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
GM	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Great Wall	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Hafei	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Holden	P2311	No description available	Powertrain
Hyundai	P2311	No description available	Powertrain
Land Rover	P2311	Ignition coil D secondary circuit Brand	Powertrain
Mahindra	P2311	No description available	Powertrain
Peugeot	P2311	No description available	Powertrain
Porsche	P2311	No description available	Powertrain
Saab	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
MG (SAIC)	P2311	Ignition Coil D Secondary Circuit Brand	Powertrain
Smart	P2311	No description available	Powertrain
Sprinter	P2311	No description available	Powertrain
Tata	P2311	Ignition Coil X Secondary Circuit Brand	Powertrain
Toyota	P2311	Vacuum pump is damaged or leaking rapidly 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 P2311 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P231100	CAN: faulty ECU communication Brand	Powertrain

6Related codes

Browse Pxxx codes or P231xx codes.