P0037
HO2S Heater Control Circuit Low Bank 1 Sensor 2
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
Free on OBD DashX
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What P0037 means
- The fault code P0037 indicates that the oxygen sensor heater control circuit for bank 1, sensor 2 is experiencing low voltage. This can cause the engine to run poorly and may trigger the check engine light.
Possible symptoms
- Illuminated check engine light
- Poor engine performance
- Reduced fuel economy
- Increased emissions output
Possible causes
- Failed oxygen sensor
- Faulty wiring or connections in the circuit
- Failed heater control circuit
- Failed engine control module (ECM)
Related parts
- Heated Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy
Possible solutions
- Replace the oxygen sensor
- Check and repair any damaged wiring or connections
- Replace the heater control circuit
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0037 on OBD DashX
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