Fault code lookup

PowertrainP118E

Caution

Severity: Caution - get it checked when you can

Oxygen (Lambda) sensor: B4 S2: signal too Lean; No or incorrect basic setting / adaptation

11 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 11

BrandCodeDescriptionSystem
BYDP118ENO. 399 battery voltage sampling wire loop fault BrandPowertrain
DaewooP118ENo description available Powertrain
EOBDP118EIltsensor 2 bank 4 BrandPowertrain
GMP118ENo description available Powertrain
HoldenP118EExhaust Gas Temperature Sensor 1 Performance - Engine Running BrandPowertrain
MitsubishiP118EFMCU IGBT10 TEMP.SNS circuit low BrandPowertrain
OpelP118ENo description available Powertrain
PeugeotP118ENo description available Powertrain
ProtonP118EFMCU IGBT10 TEMP.SNS circuit low BrandPowertrain
SaabP118ENo description available Powertrain
VolkswagenP118EOxygen (Lambda) sensor: B4 S2: signal too Lean; No or incorrect basic setting / adaptation 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 P118xx codes.

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