Fault code lookup

PowertrainP1EAA

Caution

Severity: Caution - get it checked when you can

Hybrid/EV battery voltage balance processor multiplexer performance

11 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 11

BrandCodeDescriptionSystem
DaewooP1EAANo description available Powertrain
EOBDP1EAAKewajaran sensor suhu bateri BrandPowertrain
GMP1EAANo description available Powertrain
HoldenP1EAAHybrid/EV Battery Voltage Balance Processor Multiplexer Performance BrandPowertrain
MitsubishiP1EAABATT.TEMP sensor rationality BrandPowertrain
OpelP1EAANo description available Powertrain
PeugeotP1EAANo description available Powertrain
ProtonP1EAABATT.TEMP sensor rationality BrandPowertrain
SaabP1EAANo description available Powertrain
MG (SAIC)P1EAALV5V Failed High BrandPowertrain
ToyotaP1EAAHybrid/EV battery voltage balance processor multiplexer performance 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 P1EAxx codes.

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