P0158
O2 Sensor Circuit High Voltage Bank 2 Sensor 2
P0158 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit High Voltage Bank 2 Sensor 2. Common causes: oxygen sensor malfunction, open/short circuit in sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Increased fuel consumption
- Rough engine operation
- Check Engine Light Illuminates
- Dips during acceleration
Causes
- Oxygen sensor malfunction
- Open/short circuit in sensor circuit
- Sensor contamination (oil, antifreeze)
- Fuel system problems (rich mixture)
- Malfunction of the catalytic converter
How to Fix
- Check the integrity of the wiring harness and sensor connectors
- Check the voltage at the sensor using a scanner or oscilloscope
- Replace the oxygen sensor if the fault is confirmed
- Check the fuel system for over-rich mixture
- Check the condition of the catalytic converter
Related codes
Error P0158 by Vehicle Brand
FAQ
What does the P0158 code mean?
P0158 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit High Voltage Bank 2 Sensor 2
What causes a P0158 error code?
The most common causes of P0158 include: Oxygen sensor malfunction; Open/short circuit in sensor circuit; Sensor contamination (oil, antifreeze); Fuel system problems (rich mixture).
How do I fix a P0158 diagnostic trouble code?
To fix P0158: Check the integrity of the wiring harness and sensor connectors. Check the voltage at the sensor using a scanner or oscilloscope. Replace the oxygen sensor if the fault is confirmed. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0158?
Limited driving only, diagnose soon
How much does it cost to fix P0158?
The estimated repair cost for P0158 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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