Fault Code P0158
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0158
O2 Sensor Circuit High Voltage (Bank 2, Sensor 2)
This code indicates high voltage in the second oxygen (O2) sensor circuit on Bank 2, suggesting a rich fuel mixture that affects fuel efficiency and emissions.
Part Details
Part Name
O2 Sensor
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪300 - ₪900
Engine Location
Exhaust system
Symptoms
- Increased fuel consumption
- Increased emissions
- Poor engine performance
- Check Engine light on
Possible Causes
- 1Defective O2 sensor (Bank 2, Sensor 2)
- 2Short to voltage in wiring
- 3Excessive fuel injection (rich mixture)
- 4Loose or corroded electrical connections
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