Fault code lookup

PowertrainP1284

Caution

Severity: Caution - get it checked when you can

Fuel injection air control valve circuit open

19 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 19

BrandCodeDescriptionSystem
BAIC MotorP1284Drive motor overspeed warning BrandPowertrain
BYDP1284Fuel level signal out of range BrandPowertrain
CheryP1284Air Control Valve (N212): Open Circuit BrandPowertrain
DaewooP1284Aborted KOER - ICP Failure BrandPowertrain
DFFSP1284No description available Powertrain
DFXKP1284Air Control Valve (N212): Open Circuit BrandPowertrain
EOBDP1284A/F sensor 1 BrandPowertrain
GeelyP1284Air Control Valve (N212): Open Circuit BrandPowertrain
GMP1284Aborted KOER - ICP Failure BrandPowertrain
HyundaiP1284No description available Powertrain
Land RoverP1284Aborted KOER - Injector Control Pressure Failure BrandPowertrain
MahindraP1284A/F SEN1 BrandPowertrain
NissanP1284Air/Fuel sensor 1 BrandPowertrain
PeugeotP1284No description available Powertrain
PorscheP1284No description available Powertrain
RenaultP1284No description available Powertrain
SaabP1284Aborted KOER - ICP Failure BrandPowertrain
SuzukiP1284A/F SENSOR1 (B2) BrandPowertrain
ToyotaP1284Fuel injection air control valve 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.

5Related codes

Browse Pxxx codes or P128xx codes.

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