Low severity
P0071Illogical External Temperature Sensor Reading (Circuit A)
Part
External Temperature Sensor
Part price
$10
At a workshop
$35
You save
$25
How to read code P0071
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
71
Fault number
Specific fault within the subsystem
Symptoms
- Incorrect temperature display on the screen
- Air conditioning not cooling properly
- Engine control module stored error
Possible causes
- Clogged or damaged external temperature sensor
- Sensor improperly positioned near the exhaust
- Dirty or corroded connections in the connector
Diagnostic steps
- 1Compare the temperature reading from the computer with the actual ambient temperature
- 2Check if the sensor is loosely hanging near the heated engine
- 3Clean the connections in the connector
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Frequently asked questions about P0071
What does code P0071 mean?
P0071: Illogical External Temperature Sensor Reading (Circuit A).
What are the symptoms of code P0071?
Incorrect temperature display on the screen; Air conditioning not cooling properly; Engine control module stored error.
What causes code P0071?
Clogged or damaged external temperature sensor; Sensor improperly positioned near the exhaust; Dirty or corroded connections in the connector.
Can I drive with code P0071?
SAFE TO DRIVE – The fault does not immobilise the car, but diagnose it as soon as possible.
How much does it cost to fix code P0071?
The part (External Temperature Sensor) costs about $10, and a mechanic’s labour about $25.
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