P0064
HO2S Heater Control Circuit High Bank 2 Sensor 3
Generic code
Fuel and Air Metering
Medium severity
Moderate repair
Free on OBD DashX
Want real-world data on P0064?
See which problems come with P0064, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0064 means
- The fault code P0064 indicates that there is a high voltage in the circuit controlling the heater of the oxygen sensor for bank 2, sensor 3. This may cause the engine to run poorly or not start at all.
Possible symptoms
- Illuminated check engine light
- Decreased fuel efficiency
- Rough idling or stalling
- Poor engine performance or acceleration
Possible causes
- Faulty oxygen sensor heater
- Shorted or open wiring in the circuit
- Blown oxygen sensor fuse
- 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 faulty oxygen sensor heater
- Inspect and repair any damaged wiring in the circuit
- Check and replace blown oxygen sensor fuse
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0064 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0064 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.