PowertrainP0071

Caution

Severity: Caution - get it checked when you can

Ambient Air Temperature Sensor Circuit Range/Performance

35 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 and air metering range, which includes fuel-pressure and camshaft-timing 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 promptly. Some codes in this range affect fuel pressure or camshaft timing; if the engine loses power, runs badly, 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 35

Brand	Code	Description	System
Ashok Leyland CV	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
BAIC Motor	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Mercedes-Benz	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
BMW	P0071	Ambient temperature implausible Brand	Powertrain
BYD	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Chery	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Daewoo	P0071	Injector Quantity Adjustment Not Programmed Brand	Powertrain
DFFS	P0071	Ambient temperature sensor signal stuck Brand	Powertrain
DFFX	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
DFXK	P0071	Ambient temperature sensor signal stuck Brand	Powertrain
EOBD	P0071	Omgivelsestemperatursensor krets 'A' område/ytelse Brand	Powertrain
Geely	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
GM	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Great Wall	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Hafei	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Holden	P0071	Ambient Air Temperature Sensor Performance Brand	Powertrain
Honda	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Hyundai	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Isuzu	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Land Rover	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Maserati	P0071	Ambient air temperature sensor performance Brand	Powertrain
Mitsubishi	P0071	Ambient air TEMP. sensor range Brand	Powertrain
Nissan	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Opel	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Peugeot	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Porsche	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Proton	P0071	Ambient air TEMP. sensor range Brand	Powertrain
Saab	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
MG (SAIC)	P0071	Ambient Temperature Brand	Powertrain
Smart	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Sprinter	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Subaru	P0071	Ambient Air Temperature Sensor Circuit Range/Performance SAE	Powertrain
Tata	P0071	Ambient Air Temperature Sensor Range/Performance Brand	Powertrain
Toyota	P0071	Ambient temperature sensor performance failure Brand	Powertrain
Volkswagen	P0071	Sensor for ambient air temperature (G17): implausible signal; Defective 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 14

These 7-character codes are manufacturer-specific variants of P0071 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P007100	Der Außentemperatursensor hat Funktionsstörung. Brand	Powertrain
Porsche	P007100	No description available	Powertrain
SsangYong	P007100	Air temperature sensor signal out of range Brand	Powertrain
Mercedes-Benz	P007101	Der Außentemperatursensor hat Funktionsstörung. Es liegt ein allgemeiner elektrischer Fehler vor. Brand	Powertrain
Mercedes-Benz	P007108	Der Außentemperatursensor hat Funktionsstörung.Es liegt ein Signalfehler vor oder die Botschaft ist fehlerhaft. Brand	Powertrain
Mercedes-Benz	P007126	Der Außentemperatursensor hat Funktionsstörung. Die Signaländerungsrate ist unterhalb des zulässigen Grenzwertes. Brand	Powertrain
Mercedes-Benz	P007127	Der Außentemperatursensor hat Funktionsstörung. Die Signaländerungsrate ist oberhalb des zulässigen Grenzwertes. Brand	Powertrain
Mercedes-Benz	P007128	The outside temperature sensor has a malfunction. The signal offset is outside the permissible range. Brand	Powertrain
Mercedes-Benz	P007164	No description available	Powertrain
Sprinter	P007164	No description available	Powertrain
Mercedes-Benz	P007184	Der Außentemperatursensor hat Funktionsstörung. Es liegt ein Signal unterhalb des zulässigen Grenzwertes. Brand	Powertrain
Mercedes-Benz	P007185	Der Außentemperatursensor hat Funktionsstörung. Es liegt ein Signal oberhalb des zulässigen Grenzwertes. Brand	Powertrain
Mercedes-Benz	P007186	No description available	Powertrain
Sprinter	P007186	No description available	Powertrain

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