Fault code lookup

PowertrainP156B

Caution

Severity: Caution - get it checked when you can

System voltage fault

10 brands affected · Description from DFXK data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

Safety: This code relates to the charging system. The battery may go flat and the car may stall.

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

The electrical system may fail and the battery may go flat, risking a stall. If the battery or charging warning light is on, drive straight to a workshop.

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 10

BrandCodeDescriptionSystem
DaewooP156BNo description available Powertrain
DFXKP156BSystem voltage fault BrandPowertrain
EOBDP156BStyreenhed defekt BrandPowertrain
GMP156BNo description available Powertrain
HoldenP156BAir Conditioning Refrigerant Low Pressure When A/C On BrandPowertrain
IsuzuP156BNo description available Powertrain
OpelP156BNo description available Powertrain
PeugeotP156BNo description available Powertrain
PorscheP156BNo description available Powertrain
SaabP156BNo description available 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 P156B and may be reported by some scan tools.

BrandCodeDescriptionSystem
Mercedes-BenzP156B00DPF Differenzdrucksensor 2 - Schlauchleitung verstopft Eingang BrandPowertrain
SprinterP156B00DPF Differenzdrucksensor 2 - Schlauchleitung verstopft Eingang BrandPowertrain
Mercedes-BenzP156B64Range switch rationality check for disconnect actuator power stage temperature BrandPowertrain

6Related codes

Browse Pxxx codes or P156xx codes.

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