PowertrainP01B9

Serious

Severity: Serious - have it checked soon

Engine oil temperature sensor 'B' circuit

12 brands affected · Description from Toyota data.

Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Powertrain: engine, transmission and emissions

Safety: This code relates to engine oil pressure or oil level. Low oil pressure can destroy the engine within minutes.

1What it means in plain English

This code is in the fuel, air and oxygen sensor range, which also includes coolant temperature faults.

2Common causes

Dirty or faulty mass air flow sensor
Vacuum or intake air leak
Weak fuel pump or clogged fuel filter
Faulty fuel injector
Faulty oxygen sensor
Wiring or connector fault

3Can I drive?

Serious · drive with care

Stop the engine as soon as it is safe and do not drive until it has been checked. Low oil pressure or a low oil level can destroy the engine within minutes.

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

Brand	Code	Description	System
Ashok Leyland CV	P01B9	No description available	Powertrain
Daewoo	P01B9	No description available	Powertrain
EOBD	P01B9	Sirkuit sensor suhu oli mesin 'B' Brand	Powertrain
GM	P01B9	No description available	Powertrain
Holden	P01B9	No description available	Powertrain
Honda	P01B9	No description available	Powertrain
Isuzu	P01B9	No description available	Powertrain
Land Rover	P01B9	Engine Oil Temperature Sensor 'B' Circuit Brand	Powertrain
Opel	P01B9	No description available	Powertrain
Peugeot	P01B9	No description available	Powertrain
Saab	P01B9	No description available	Powertrain
Toyota	P01B9	Engine oil temperature sensor 'B' circuit 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.

5Related codes

Browse Pxxx codes or P01Bxx codes.