P0063
HO2S Heater Control Circuit Low Bank 2 Sensor 3
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
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What P0063 means
- The fault code P0063 indicates that there is an issue with the control circuit of the heater for the oxygen sensor (HO2S) on bank 2, sensor 3. This may cause the HO2S to not function properly, leading to poor engine performance and increased emissions.
Possible symptoms
- Illuminated check engine light
- Poor engine performance
- Increased emissions
- Reduced fuel efficiency
Possible causes
- Failed HO2S heater
- Short or open circuit in the wiring of the HO2S heater control circuit
- Faulty electrical connections or connectors
- 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 HO2S
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
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P0063 on OBD DashX
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