Fault code lookup

PowertrainP21CE

Caution

Severity: Caution - get it checked when you can

Reductant quality module performance

7 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

  1. Sensor or actuator fault
  2. Wiring or connector fault
  3. Vacuum or intake leak
  4. Fuel or ignition problem
  5. 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 7

BrandCodeDescriptionSystem
Ashok Leyland CVP21CESpeed Limiter Warning Lamp. Overheating BrandPowertrain
EOBDP21CEPrestasi modul kualiti reductant BrandPowertrain
HyundaiP21CENo description available Powertrain
IsuzuP21CENo description available Powertrain
Land RoverP21CENo description available Powertrain
TataP21CENo description available Powertrain
ToyotaP21CEReductant quality module performance BrandPowertrain

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 P21Cxx codes.

OpenDTC - independent fault code reference