Fault Code P0157
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0157
O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)
This code indicates low voltage in the second oxygen (O2) sensor circuit on Bank 2, which can affect 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 ground in wiring
- 3Loose or corroded electrical connections
- 4Exhaust system air leak
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