Low severity
P0073High voltage in the external temperature sensor circuit (Circuit A)
Part
External temperature sensor
Part price
$10
At a workshop
$35
You save
$25
How to read code P0073
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
73
Fault number
Specific fault within the subsystem
Symptoms
- The dash shows maximum temperature
- The AC blows heat instead of cold
- Check Engine light is on
Possible causes
- Open circuit or broken wire
- Faulty sensor
- Bypassed or pulled out connector
Diagnostic steps
- 1Check if the sensor is even connected
- 2Unplug the connector and check computer response
- 3Use a multimeter to test continuity of wires
Ad space
Frequently asked questions about P0073
What does code P0073 mean?
P0073: High voltage in the external temperature sensor circuit (Circuit A).
What are the symptoms of code P0073?
The dash shows maximum temperature; The AC blows heat instead of cold; Check Engine light is on.
What causes code P0073?
Open circuit or broken wire; Faulty sensor; Bypassed or pulled out connector.
Can I drive with code P0073?
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 P0073?
The part (External temperature sensor) costs about $10, and a mechanic’s labour about $25.
Ad space