Fault code lookup

PowertrainP1A59

Caution

Severity: Caution - get it checked when you can

CMU08 cell voltage low

15 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 15

BrandCodeDescriptionSystem
BYDP1A59BMS charging hardware protection BrandPowertrain
CheryP1A59No CAN communication BrandPowertrain
DaewooP1A59No description available Powertrain
EOBDP1A59Hübriidaku pakkpinge BrandPowertrain
GMP1A59No description available Powertrain
HoldenP1A59Control Module Internal Watchdog Malfunction BrandPowertrain
HondaP1A59No description available Powertrain
Land RoverP1A59No description available Powertrain
MitsubishiP1A59CMU08 Cell voltage low BrandPowertrain
OpelP1A59No description available Powertrain
PeugeotP1A59No description available Powertrain
ProtonP1A59CMU08 Cell voltage low BrandPowertrain
SaabP1A59No description available Powertrain
MG (SAIC)P1A59Software Related Watchdog Fault BrandPowertrain
ToyotaP1A59CMU08 cell voltage low 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 P1A5xx codes.

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