Low severity
P0044High voltage in the heater circuit of the oxygen sensor (Bank 1, Sensor 3)
Part
Oxygen sensor
Part price
$75
At a workshop
$100
You save
$25
How to read code P0044
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
44
Fault number
Specific fault within the subsystem
Symptoms
- Check Engine Light
- Possible slight increase in fuel consumption during warm-up
Possible causes
- Short to positive battery in the heater circuit
- Internal damage to the oxygen sensor
- Engine control module malfunction
Diagnostic steps
- 1Check voltage at the heater control pins
- 2Unplug the sensor connector and assess if the error code clears or changes to P0043
- 3Inspect the wiring harness for melted wires
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Frequently asked questions about P0044
What does code P0044 mean?
P0044: High voltage in the heater circuit of the oxygen sensor (Bank 1, Sensor 3).
What are the symptoms of code P0044?
Check Engine Light; Possible slight increase in fuel consumption during warm-up.
What causes code P0044?
Short to positive battery in the heater circuit; Internal damage to the oxygen sensor; Engine control module malfunction.
Can I drive with code P0044?
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 P0044?
The part (Oxygen sensor) costs about $75, and a mechanic’s labour about $25.
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