Fault code lookup

PowertrainP1A94

Caution

Severity: Caution - get it checked when you can

Reversible alternator

13 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

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 13

BrandCodeDescriptionSystem
BYDP1A94Single battery temperature too high BrandPowertrain
CheryP1A94Engine running prohibited BrandPowertrain
DaewooP1A94No description available Powertrain
EOBDP1A94Omkeerbare dynamo BrandPowertrain
GMP1A94No description available Powertrain
HoldenP1A94No description available Powertrain
Land RoverP1A94Left mirror local interconnection network communications failure BrandPowertrain
MitsubishiP1A94CMU07 Battery balancing unit BrandPowertrain
OpelP1A94No description available Powertrain
PeugeotP1A94No description available Powertrain
ProtonP1A94CMU07 Battery balancing unit BrandPowertrain
SaabP1A94No description available Powertrain
ToyotaP1A94Reversible alternator 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 P1A9xx codes.

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