PowertrainP0186

Caution

Severity: Caution - get it checked when you can

Fuel Temperature Sensor B Circuit Range/Performance

26 brands affected · Generic SAE J2012 description.

Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

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?

Caution · drive with care

Have it diagnosed if the engine runs badly or the code keeps returning. Because this range includes coolant temperature sensors, watch the temperature gauge: if it climbs into the red, or the engine overheats or stalls, stop safely and get professional help.

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 26

Brand	Code	Description	System
Ashok Leyland CV	P0186	Fuel Temperature Sensor B Circuit Range/Performance SAE	Powertrain
BAIC Motor	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
BMW	P0186	Fuel Temperature Sensor B Circuit Range / Perf Brand	Powertrain
BYD	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Chery	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Daewoo	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
DFFS	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
DFFX	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
DFXK	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
EOBD	P0186	Julatan/prestasi litar sensor suhu bahan api 'B' Brand	Powertrain
Geely	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
GM	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Great Wall	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Hafei	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Holden	P0186	Fuel Rail Temperature Sensor Performance Brand	Powertrain
Honda	P0186	Fuel Temperature Sensor B Circuit Range/Performance SAE	Powertrain
Hyundai	P0186	Fuel Temperature Sensor B Circuit Range/Performance SAE	Powertrain
Isuzu	P0186	Fuel Temperature Sensor B Circuit Range/Performance SAE	Powertrain
Land Rover	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Opel	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Peugeot	P0186	Fuel Temperature Sensor B Circuit Range/Performance SAE	Powertrain
Saab	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Tata	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Toyota	P0186	Fuel Temperature Sensor B Circuit Range/Performance Brand	Powertrain
Volkswagen	P0186	Fuel Temperature Sensor B (G248): Circuit Range / Performance 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 2

These 7-character codes are manufacturer-specific variants of P0186 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P018684	Fuel temperature sensor 2 has a malfunction. There is a signal below the permissible limit value. Brand	Powertrain
Mercedes-Benz	P018685	Fuel temperature sensor 2 has a malfunction. There is a signal above the permissible limit value. Brand	Powertrain

6Related codes

Browse Pxxx codes or P018xx codes.