Fault code lookup

PowertrainP1AE7

Caution

Severity: Caution - get it checked when you can

Battery energy control module Hybrid/EV battery voltage system isolation lost

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

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 12

BrandCodeDescriptionSystem
DaewooP1AE7No description available Powertrain
EOBDP1AE7ASC-systemfel BrandPowertrain
GMP1AE7No description available Powertrain
HoldenP1AE7Clutch 1 Solenoid Valve Control Circuit High Current BrandPowertrain
MahindraP1AE7No description available Powertrain
MitsubishiP1AE7ASC system fail BrandPowertrain
OpelP1AE7No description available Powertrain
PeugeotP1AE7No description available Powertrain
ProtonP1AE7ASC system fail BrandPowertrain
SaabP1AE7No description available Powertrain
MG (SAIC)P1AE7Output Current Control of Clutch1 Range High BrandPowertrain
ToyotaP1AE7Battery energy control module Hybrid/EV battery voltage system isolation lost 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.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P1AE7 and may be reported by some scan tools.

BrandCodeDescriptionSystem
Mercedes-BenzP1AE71ABattery Energy Control Module Hybrid Battery Voltage System Isolation Circuit. circuit resistance below threshold BrandPowertrain

6Related codes

  • P1AE0 Hybrid mode prohibited
  • P1AE1 Engine stop prohibited
  • P1AE2 Only electric mode prohibited
  • P1AE3 Engine neutral idle stop
  • P1AE4 Switch of the traction battery
  • P1AE5 RAM arithmetic fail
  • P1AE6 Battery energy control module Hybrid/EV battery voltage isolation sensor circuit
  • P1AE8 Drive motor 1 control module Hybrid/EV battery voltage sense circuit low voltage
  • P1AE9 Drive motor 1 control module Hybrid/EV battery voltage sense circuit high voltage
  • P1AEA Drive motor 2 control module Hybrid/EV battery voltage sense circuit low voltage
  • P1AEB Drive motor 2 control module Hybrid/EV battery voltage sense circuit high voltage
  • P1AEC Drive motor 1 control module Hybrid/EV battery system voltage

Browse Pxxx codes or P1AExx codes.

OpenDTC - independent fault code reference