PowertrainP29FF

Serious

Severity: Serious - have it checked soon

Hybrid/EV Battery Thermal Runaway Detected

1 brand affected · Description from Land Rover 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 a battery thermal runaway or thermal propagation event. An overheating or damaged high-voltage battery can catch fire and release dangerous gases.

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

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
Control module fault

3Can I drive?

Serious · drive with care

Stop safely away from buildings and people - battery overheating can lead to fire. Do not charge or drive. Have the vehicle recovered.

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 1

Brand	Code	Description	System
Land Rover	P29FF	Hybrid/EV Battery Thermal Runaway Detected Brand	Powertrain

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 P29FF and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P29FF00	Hybrid/EV Battery 'A' Thermal Runaway Detected. Brand	Powertrain

6Related codes

Browse Pxxx codes or P29Fxx codes.