Fault code lookup

PowertrainP166D

Caution

Severity: Caution - get it checked when you can

Engine control module: incorrect Installation

16 brands affected · Description from Volkswagen 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 16

BrandCodeDescriptionSystem
BYDP166DInput shaft 1 sensor acquisition fault BrandPowertrain
CheryP166DFault diagnostic report, ZFC implausible BrandPowertrain
DaewooP166DNo description available Powertrain
DFXKP166DECU internal software and hardware underlying monitoring fault BrandPowertrain
EOBDP166DDME vale paigaldus BrandPowertrain
GMP166DNo description available Powertrain
Great WallP166DFuel injection mass error BrandPowertrain
HoldenP166DTurbocharger Vane Position Performance - Low Position BrandPowertrain
HondaP166DNo description available Powertrain
IsuzuP166DNo description available Powertrain
OpelP166DNo description available Powertrain
PeugeotP166DNo description available Powertrain
ProtonP166DNo description available Powertrain
SaabP166DNo description available Powertrain
TataP166DNo description available Powertrain
VolkswagenP166DEngine control module: incorrect Installation 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 P166xx codes.

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