Low severity
P0037Low voltage in the heater circuit of the O2 sensor (Bank 1, Sensor 2)
Part
O2 sensor after the catalytic converter
Part price
$75
At a workshop
$100
You save
$25
How to read code P0037
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
37
Fault number
Specific fault within the subsystem
Symptoms
- Check engine light on the dashboard
- Slower heating of the sensor after start-up
- Longer time for the system to enter closed loop
Possible causes
- Short to ground in the heater circuit
- Faulty O2 sensor heater
- Dirty or corroded contacts in the connector
Diagnostic steps
- 1Check voltage at the sensor heater connector with the ignition on
- 2Test the resistance of the heater element itself
- 3Clean and protect the connector with a contact cleaner
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Frequently asked questions about P0037
What does code P0037 mean?
P0037: Low voltage in the heater circuit of the O2 sensor (Bank 1, Sensor 2).
What are the symptoms of code P0037?
Check engine light on the dashboard; Slower heating of the sensor after start-up; Longer time for the system to enter closed loop.
What causes code P0037?
Short to ground in the heater circuit; Faulty O2 sensor heater; Dirty or corroded contacts in the connector.
Can I drive with code P0037?
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 P0037?
The part (O2 sensor after the catalytic converter) costs about $75, and a mechanic’s labour about $25.
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