Fault Code P0159
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0159
O2 Sensor Circuit Slow Response (Bank 2, Sensor 2)
This code indicates a slow response from the second oxygen (O2) sensor on Bank 2, preventing the ECM from properly adjusting the fuel mixture and leading to performance issues.
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)
- 2Contaminants on the sensor
- 3Loose or corroded electrical connections
- 4Exhaust system air leak
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