P0158 2003 Infiniti G35 Code - HO2S22 Circuit High Voltage
Quick Answer
The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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
- P0158 2003 Infiniti G35 indicates HO2S22 Circuit High Voltage.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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 P0158 2003 Infiniti G35 Description
What are the Possible Causes of the DTC P0158 2003 Infiniti G35?
- Faulty Rear Heated Oxygen Sensor Bank 2
- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks
- Exhaust gas leaks
How to Fix the DTC P0158 2003 Infiniti G35?
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 P0158 2003 Infiniti G35 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 P0158 2003 Infiniti G35 Code
1. What are the common symptoms of OBDII code P0158 on a 2003 Infiniti G35?
The common symptoms of code P0158 on a 2003 Infiniti G35 include poor fuel economy, rough idling, loss of power, and the illumination of the Check Engine Light.
2. What does the HO2S22 Circuit High Voltage error code mean on a 2003 Infiniti G35?
The OBDII code P0158 for a 2003 Infiniti G35 indicates that the oxygen sensor (HO2S22) in bank 2 sensor 2 is reporting a high voltage condition.
3. What are the possible causes of the HO2S22 Circuit High Voltage code on a 2003 Infiniti G35?
Potential causes of code P0158 on a 2003 Infiniti G35 include a faulty oxygen sensor, wiring issues in the oxygen sensor circuit, exhaust leaks, or a malfunctioning engine control module (ECM).
4. How can I diagnose the HO2S22 Circuit High Voltage code on my 2003 Infiniti G35?
To diagnose code P0158 on a 2003 Infiniti G35, you can use an OBDII scanner to retrieve the specific fault code, visually inspect the oxygen sensor and its wiring, check for exhaust leaks, and perform voltage tests on the sensor.
5. Can I drive my 2003 Infiniti G35 with the HO2S22 Circuit High Voltage code?
It is not recommended to drive your 2003 Infiniti G35 with an unresolved P0158 code, as it can lead to reduced fuel efficiency, engine performance issues, and potential damage to the catalytic converter.
6. How do I repair the HO2S22 Circuit High Voltage code on a 2003 Infiniti G35?
To repair the P0158 code on a 2003 Infiniti G35, you may need to replace the oxygen sensor in bank 2 sensor 2, repair any damaged wiring, fix exhaust leaks, or reprogram the engine control module if necessary.
7. Can a dirty air filter cause the HO2S22 Circuit High Voltage code on a 2003 Infiniti G35?
While a dirty air filter can affect engine performance, it is unlikely to directly cause the P0158 code. Focus on checking the oxygen sensor, wiring, and exhaust system for this specific error.
8. How much does it typically cost to fix the HO2S22 Circuit High Voltage code on a 2003 Infiniti G35?
The cost of repairing the P0158 code on a 2003 Infiniti G35 can vary depending on the specific issue, but it may range from $100 to $500, including parts and labor.
9. Will resetting the Check Engine Light resolve the HO2S22 Circuit High Voltage code on a 2003 Infiniti G35?
Resetting the Check Engine Light may temporarily turn it off, but if the underlying issue causing the P0158 code is not addressed, the light is likely to come back on as the system runs its diagnostic checks.
10. How often should I replace the oxygen sensors in a 2003 Infiniti G35 to prevent the HO2S22 Circuit High Voltage code?
Oxygen sensors typically last around 60,000 to 90,000 miles, but factors like driving conditions and maintenance practices can affect their lifespan. It's recommended to follow the manufacturer's guidelines for sensor replacement to prevent issues like code P0158.
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