PowertrainP21D2

Caution

Severity: Caution - get it checked when you can

Cylinder 4 injector 'B' circuit/open

15 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 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

Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.

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 15

Brand	Code	Description	System
Ashok Leyland CV	P21D2	No description available	Powertrain
Daewoo	P21D2	No description available	Powertrain
EOBD	P21D2	Sylinteri 4 suutin 'B' piiri/auki Brand	Powertrain
GM	P21D2	No description available	Powertrain
Holden	P21D2	Cylinder 4 Injector 2 Control Circuit Brand	Powertrain
Honda	P21D2	No description available	Powertrain
Isuzu	P21D2	No description available	Powertrain
Land Rover	P21D2	Cylinder 4 Injector 'B' Circuit/Open Brand	Powertrain
Mitsubishi	P21D2	No description available	Powertrain
Opel	P21D2	No description available	Powertrain
Peugeot	P21D2	No description available	Powertrain
Proton	P21D2	No description available	Powertrain
Saab	P21D2	No description available	Powertrain
Suzuki	P21D2	Injector Circuit / Open - Cylinder4 (Injector No.4-2) Brand	Powertrain
Toyota	P21D2	Cylinder 4 injector 'B' circuit/open 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.

5Related codes

Browse Pxxx codes or P21Dxx codes.