P0160: Downstream O2 sensor circuit no activity (Bank 2 Sensor 2)
You can keep driving. Get it checked when convenient.
Can I drive with P0160?
Yes, you can keep driving. Rear sensor unplugged or dead; engine computer functions normally.
What does P0160 mean?
P0160 stands for O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 2).
Symptoms you may notice
- Check engine light on with no noticeable change in how the car drives
- Vehicle fails state emissions smog test
- Normal engine power and shifting
How much does it cost to fix?
Repair costs for code P0160 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Disconnected Bank 2 rear sensor connector
- Severed underbody wiring harness
- Failed rear oxygen sensor
- Corroded connector terminals
What to do next
- Inspect the wiring connector under the vehicle.
- Confirm the connector is firmly snapped together.
- Replace Bank 2 Sensor 2.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0160 is common when underbody wires get snagged by roadside debris or during service. Safe to drive.