PowertrainP20C2

Caution

Severity: Caution - get it checked when you can

Reductant Heater C Control Circuit Performance

26 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

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 26

Brand	Code	Description	System
Ashok Leyland CV	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
BAIC Motor	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Mercedes-Benz	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
BYD	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Chery	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Daewoo	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
DFFS	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
DFFX	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
DFXK	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
EOBD	P20C2	Reduktantvarmer 'C' styringskrets ytelse Brand	Powertrain
Geely	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
GM	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Great Wall	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Hafei	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Holden	P20C2	Reductant Heater 3 Performance Brand	Powertrain
Hyundai	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
Isuzu	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
Land Rover	P20C2	Reductant heater C control - performance Brand	Powertrain
Maserati	P20C2	Reductant Heater 3 Control Circuit Performance Brand	Powertrain
Opel	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Peugeot	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
Saab	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
MG (SAIC)	P20C2	Reductant Heater 'C' Control Circuit Performance Brand	Powertrain
Smart	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
Sprinter	P20C2	Reductant Heater C Control Circuit Performance SAE	Powertrain
Toyota	P20C2	Reductant heater 'C' control circuit performance 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 3

These 7-character codes are manufacturer-specific variants of P20C2 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P20C201	Right O2 sensor after TWC: short circuit to positive / resistance of sensor heater too low Brand	Powertrain
SsangYong	P20C202	Right O2 sensor after TWC: short circuit to ground Brand	Powertrain
SsangYong	P20C204	Right O2 sensor after TWC: open circuit in sensor heater line Brand	Powertrain

6Related codes

Browse Pxxx codes or P20Cxx codes.