P0159
O2 Sensor Circuit Slow Response Bank 2 Sensor 2
P0159 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit Slow Response Bank 2 Sensor 2. Common causes: oxygen sensor malfunction, sensor contamination. Estimated repair cost: $56–167.
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Increased emissions of harmful substances
- Check Engine Light Is On
Causes
- Oxygen sensor malfunction
- Sensor contamination
- Wiring harness damage
- Poor contact in the sensor connector
- Grounding problems
How to Fix
- Check the condition of the oxygen sensor
- Check the integrity of the wiring harness
- Clean connector contacts
- Replace sensor if necessary
- Reset the error and check the system operation
Related codes
Error P0159 by Vehicle Brand
FAQ
What does the P0159 code mean?
P0159 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit Slow Response Bank 2 Sensor 2
What causes a P0159 error code?
The most common causes of P0159 include: Oxygen sensor malfunction; Sensor contamination; Wiring harness damage; Poor contact in the sensor connector.
How do I fix a P0159 diagnostic trouble code?
To fix P0159: Check the condition of the oxygen sensor. Check the integrity of the wiring harness. Clean connector contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0159?
Limited driving only, diagnose soon
How much does it cost to fix P0159?
The estimated repair cost for P0159 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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