Fault code lookup

PowertrainP1A63

Caution

Severity: Caution - get it checked when you can

CMU06 cell voltage high

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
CheryP1A63Motor position sensor malf BrandPowertrain
DaewooP1A63No description available Powertrain
EOBDP1A63CMU06 celspanning hoog BrandPowertrain
GMP1A63No description available Powertrain
HoldenP1A63Clutch 2 Solenoid Valve Control Circuit High Current BrandPowertrain
HondaP1A63No description available Powertrain
Land RoverP1A63No description available Powertrain
MitsubishiP1A63CMU06 Cell voltage high BrandPowertrain
OpelP1A63No description available Powertrain
PeugeotP1A63No description available Powertrain
ProtonP1A63CMU06 Cell voltage high BrandPowertrain
SaabP1A63No description available Powertrain
MG (SAIC)P1A63Output Current Control of Clutch2 Range High BrandPowertrain
SuzukiP1A63No description available Powertrain
ToyotaP1A63CMU06 cell voltage high 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 P1A6xx codes.

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