P0058 Subaru Code - HO2S22 Heater Control Circuit High
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 2, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 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
- P0058 Subaru indicates HO2S22 Heater Control Circuit High.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 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 P0058 Subaru 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 P0058 Subaru?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0058 Subaru?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0058 Subaru 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 P0058 Subaru Code
1. What are the common symptoms of OBDII code P0058 in a Subaru?
- Common symptoms include poor fuel economy, rough idling, engine misfires, and potentially an illuminated check engine light.
2. What does the HO2S22 Heater Control Circuit High code mean in a Subaru?
- This code indicates that the oxygen sensor (HO2S22) located after the catalytic converter is detecting a high voltage in its heater control circuit.
3. What are the possible causes of the P0058 code in a Subaru?
- Potential causes include a faulty oxygen sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or a problem with the Engine Control Module (ECM).
4. How can I diagnose the issue causing code P0058 in my Subaru?
- Start by checking the oxygen sensor's wiring and connectors for damage. Test the sensor's heater circuit resistance and voltage. Use a scan tool to monitor live data and confirm the high voltage reading.
5. Can I drive my Subaru with the P0058 code present?
- It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent potential long-term damage to the catalytic converter and ensure optimal engine performance.
6. How can I repair the HO2S22 Heater Control Circuit High code in my Subaru?
- The most common repair is to replace the faulty oxygen sensor (HO2S22) with a new one. Ensure the wiring and connectors are in good condition and the fuse related to the sensor is intact.
7. Will resetting the check engine light resolve the P0058 code in my Subaru?
- Resetting the check engine light may temporarily clear the code, but it will likely return if the underlying issue causing the high voltage in the heater circuit is not addressed.
8. How much does it typically cost to repair OBDII code P0058 in a Subaru?
- The cost of repairing this code can vary depending on the cause of the issue, but it usually ranges from $150 to $300 for parts and labor if you take your vehicle to a mechanic.
9. Can a DIY enthusiast fix the P0058 code in a Subaru?
- Yes, if you have the necessary tools and experience working on automotive electrical systems, you may be able to replace the oxygen sensor and check the wiring yourself to resolve the issue.
10. How often does the HO2S22 Heater Control Circuit High code occur in Subaru vehicles?
- While not extremely common, this code can occur in Subaru vehicles, especially in older models or those with high mileage, due to normal wear and tear on sensor components.
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