P0158 Code - O2 Sensor Circuit High Voltage Bank 2 Sensor 2
Quick Answer
The O2 sensor, or oxygen sensor, is a crucial component of a vehicle's emissions system that monitors the oxygen levels in the exhaust gases. Common causes include Faulty O2 sensor, Wiring issues or short circuits in the O2 sensor circuit, Exhaust system leaks. 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 indicates O2 Sensor Circuit High Voltage Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty O2 sensor, Wiring issues or short circuits in the O2 sensor circuit, Exhaust system leaks.
- 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.
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Code P0158 Description
The O2 sensor, or oxygen sensor, is a crucial component of a vehicle's emissions system that monitors the oxygen levels in the exhaust gases. The P0158 diagnostic trouble code indicates that there is a high voltage condition detected in the O2 sensor circuit for Bank 2 Sensor 2. Bank 2 refers to the side of the engine that does not contain the number one cylinder, while Sensor 2 indicates that this is the downstream sensor located after the catalytic converter.
Common Causes of P0158
- Faulty O2 sensor
- Wiring issues or short circuits in the O2 sensor circuit
- Exhaust system leaks
- Engine running rich due to issues with fuel injectors or fuel pressure regulator
- Faulty ECM
Symptoms of P0158
- Decreased fuel efficiency
- Engine misfires or hesitation
- Rough idling or stalling
- Increased emissions output
- Check Engine Light illuminated on the dashboard
How to Fix P0158
- Diagnose the issue by connecting a scan tool to the vehicle's OBD-II port to retrieve the specific trouble code and data from the O2 sensor.
- Inspect the wiring harness and connectors for any damage or corrosion. Repair or replace as necessary.
- Test the O2 sensor using a multimeter to check for proper voltage output. Replace the sensor if it is faulty.
- Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.
- If the issue persists, further diagnostics may be needed to identify any underlying problems with the engine or exhaust system.
Cost to Fix P0158
The cost of repairing a P0158 code can vary depending on the cause of the issue and the specific vehicle make and model. In general, the cost of replacing an O2 sensor ranges from $150 to $300, including parts and labor. Additional costs may be incurred for diagnosing any underlying issues or repairing wiring harnesses. It's recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate for your specific vehicle.
Tech Notes for P0158
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Code P0158 Information for Specific Makes
- P0158 Acura — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 Audi — HO2S22 Sensor Circuit High Voltage
- P0158 BMW — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 Buick — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Cadillac — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Chevrolet — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Chrysler — O2 Sensor 2/2 Circuit High
- P0158 Dodge — O2 Sensor 2/2 Circuit High
- P0158 Ford — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 GMC — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Honda — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 Hyundai — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Infiniti — HO2S22 Circuit High Voltage
- P0158 Jaguar — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 Jeep — O2 Sensor 2/2 Circuit High
- P0158 KIA — HO2S21 Circuit High Voltage
- P0158 Lexus — HO2S22 Circuit High Voltage
- P0158 Mazda — HO2S LR Circuit High Input
- P0158 Mercedes-Benz — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 MINI — O2 Sensor Circuit High Voltage Bank 2 Sensor 2
- P0158 Mitsubishi — Cylinder 2-3 Heated Oxygen Rear Sensor Circuit High Voltage
- P0158 Nissan — HO2S22 Circuit High Voltage
- P0158 Pontiac — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Saturn — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Scion — HO2S22 Circuit High Voltage
- P0158 Subaru — HO2S22 Circuit High Voltage
- P0158 Suzuki — HO2S Circuit High Voltage Bank 2 Sensor 2
- P0158 Toyota — HO2S22 Circuit High Voltage
- P0158 Volkswagen — HO2S22 Sensor Circuit High Voltage
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