P0038
HO2S Heater Control Circuit High Bank 1 Sensor 2
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
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What P0038 means
- The fault code P0038 indicates that there is an issue with the oxygen sensor heater control circuit for bank 1 sensor 2. This can cause the engine to run poorly, decrease fuel efficiency, and increase emissions.
Possible symptoms
- Poor engine performance
- Decreased fuel efficiency
- Increased emissions
- Illuminated check engine light
Possible causes
- Short circuit in the oxygen sensor heater control circuit
- Failed oxygen sensor heater
- Faulty wiring or connections in the 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 heater
- Check and repair any damaged wiring or connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0038 on OBD DashX
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