PowertrainP0B65

Caution

Severity: Caution - get it checked when you can

Coolant overtemperature protection

25 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 engine cooling or temperature. Overheating can damage the engine.

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?

Caution · drive with care

Watch the temperature gauge. Stop safely and let the engine cool if the gauge climbs, steam appears, or a red warning light comes on.

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 25

Brand	Code	Description	System
Ashok Leyland CV	P0B65	No description available	Powertrain
BAIC Motor	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
BYD	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Chery	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Daewoo	P0B65	No description available	Powertrain
DFFS	P0B65	Coolant overtemperature protection Brand	Powertrain
DFFX	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
DFXK	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
EOBD	P0B65	Sirkuit tegangan baterai Hybrid/EV 'I' rendah Brand	Powertrain
Ford	P0B65	No description available	Powertrain
Geely	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
GM	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Great Wall	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Hafei	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Holden	P0B65	Hybrid/EV Battery 9 Circuit Low Voltage Brand	Powertrain
Honda	P0B65	No description available	Powertrain
Hyundai	P0B65	No description available	Powertrain
Isuzu	P0B65	No description available	Powertrain
Land Rover	P0B65	Hybrid/electric vehicle battery - Voltage - Sense I - Circuit low Brand	Powertrain
Mazda	P0B65	No description available	Powertrain
Opel	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Peugeot	P0B65	No description available	Powertrain
Saab	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
MG (SAIC)	P0B65	Hybrid Battery Voltage Sense 'I' Circuit Low Brand	Powertrain
Toyota	P0B65	Coolant overtemperature protection 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 P0B65 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P0B6500	Sensor I for the battery voltage of the hybrid/high-voltage battery has a short circuit to ground. Brand	Powertrain

6Related codes

Browse Pxxx codes or P0B6xx codes.