P0063 Code - HO2S Heater Control Circuit Low Bank 2 Sensor 3
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0063 indicates HO2S Heater Control Circuit Low Bank 2 Sensor 3.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0063 Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0063?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 harness is open shorted
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 3 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0063?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0063 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0063 Code
1. What are the common symptoms of OBDII code P0063 (HO2S Heater Control Circuit Low Bank 2 Sensor 3)?
- Common symptoms include poor fuel efficiency, rough idling, stalling, and the illumination of the Check Engine Light.
2. What are the possible causes of OBDII code P0063?
- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a problem with the engine control module.
3. How can I diagnose OBDII code P0063?
- Diagnosis typically involves using an OBDII scanner to retrieve the fault code, inspecting the wiring and connectors for damage, checking the fuse, and testing the oxygen sensor.
4. How can I repair OBDII code P0063?
- Repair may involve replacing the oxygen sensor, repairing or replacing damaged wiring or connectors, replacing a blown fuse, or reprogramming the engine control module.
5. Can I continue driving with OBDII code P0063?
- It is generally not recommended to continue driving with this code as it can lead to poor engine performance and potential damage if left unresolved.
6. How much does it cost to fix OBDII code P0063?
- The cost of fixing this code can vary depending on the specific cause of the issue, but it may range from around $100 to $400 for parts and labor.
7. Is OBDII code P0063 a serious issue?
- While the severity of the issue may vary, it is important to address this code promptly to prevent further damage to the vehicle and ensure optimal engine performance.
8. Can a DIY enthusiast repair OBDII code P0063?
- DIY repairs are possible for this code, especially for tasks like checking fuses and inspecting wiring. However, replacing components like the oxygen sensor may require professional expertise.
9. How often does OBDII code P0063 occur in vehicles?
- This code is relatively uncommon compared to other OBDII codes, but it can still occur in vehicles with issues related to the oxygen sensor heating circuit.
10. Can extreme weather conditions trigger OBDII code P0063?
- Extreme weather conditions, particularly very cold temperatures, can potentially impact the performance of the oxygen sensor heating circuit and trigger this code.
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