Fault code lookup

PowertrainP127A

Caution

Severity: Caution - get it checked when you can

Cell monitor IC1 cell voltage A/D convert malfunction

12 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 12

BrandCodeDescriptionSystem
DaewooP127ANo description available Powertrain
EOBDP127ACelmonitor IC1 celspanning A/D-conversiefout BrandPowertrain
GMP127ANo description available Powertrain
HoldenP127ANo description available Powertrain
Land RoverP127AAborted KOER - Fuel Pressure Failure BrandPowertrain
MahindraP127ANo description available Powertrain
MitsubishiP127ACell MON.IC1 Cell VOLT.A/D CONV BrandPowertrain
OpelP127ANo description available Powertrain
PeugeotP127ANo description available Powertrain
ProtonP127ACell MON.IC1 Cell VOLT.A/D CONV BrandPowertrain
SaabP127ANo description available Powertrain
ToyotaP127ACell monitor IC1 cell voltage A/D convert malfunction 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 P127xx codes.

OpenDTC - independent fault code reference