Fault code lookup

PowertrainP20CB

Caution

Severity: Caution - get it checked when you can

Exhaust Aftertreatment Fuel Injector A Control Circuit/Open

27 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

  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 27

BrandCodeDescriptionSystem
Ashok Leyland CVP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
BAIC MotorP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
Mercedes-BenzP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
BYDP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
CheryP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
DaewooP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
DFFSP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
DFFXP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
DFXKP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
EOBDP20CBAvgasrening bränsleinsprutare 'A' styrkrets/avbrott BrandPowertrain
FordP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
GeelyP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
GMP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
Great WallP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
HafeiP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
HoldenP20CBExhaust Aftertreatment Fuel Injector Control Circuit BrandPowertrain
HyundaiP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
IsuzuP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
Land RoverP20CBExhaust after treatment fuel injector A control - circuit/open BrandPowertrain
OpelP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
PeugeotP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
SaabP20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
MG (SAIC)P20CBExhaust Aftertreatment Fuel Injector 'A' Control Circuit/Open BrandPowertrain
SmartP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
SprinterP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
TataP20CBExhaust Aftertreatment Fuel Injector A Control Circuit/Open SAEPowertrain
ToyotaP20CBExhaust aftertreatment fuel injector 'A' control circuit/open 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.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P20CB and may be reported by some scan tools.

BrandCodeDescriptionSystem
SsangYongP20CB08No CAN message 'vehicle speed signal left front wheel' from ESP control module or message faulty: read fault memory of control unit ESP BrandPowertrain

6Related codes

Browse Pxxx codes or P20Cxx codes.

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