P0160moderate severityPowertrain
O2 Sensor Circuit No Activity Bank 2 Sensor 2
on 2005 Toyota 4Runner 4.0L V6 · RWD
What this code means
No activity from the downstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
Common causes
- Faulty sensor
- Heater failure
- Wiring open
Diagnostic steps
- Test signal
- Check heater
- Inspect wiring
Repair notes
Replace sensor.
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