P11D0
O2 Signal Circuit (NOx Sensor 2)
P11D0 is an OBD-II diagnostic trouble code meaning: O2 Signal Circuit (NOx Sensor 2). Common causes: open or short circuit in the nox 2 sensor circuit, malfunction of the nox sensor itself. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Deterioration of vehicle dynamics
- Increased fuel consumption
- Problems with passing technical inspection
- It is possible to switch to emergency engine operation mode
Causes
- Open or short circuit in the NOx 2 sensor circuit
- Malfunction of the NOx sensor itself
- Poor contact in the sensor connector
- Wiring harness damage
- Problems with the engine control unit
How to Fix
- Check the integrity of the wiring to the NOx sensor 2
- Inspect the sensor connector for corrosion or damage.
- Check resistance and sensor signal
- If necessary, replace NOx 2 sensor
- Reset the error and check if it returns
Related codes
FAQ
What does the P11D0 code mean?
P11D0 is an OBD-II diagnostic trouble code that indicates: O2 Signal Circuit (NOx Sensor 2)
What causes a P11D0 error code?
The most common causes of P11D0 include: Open or short circuit in the NOx 2 sensor circuit; Malfunction of the NOx sensor itself; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P11D0 diagnostic trouble code?
To fix P11D0: Check the integrity of the wiring to the NOx sensor 2. Inspect the sensor connector for corrosion or damage.. Check resistance and sensor signal. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11D0?
Yes, but get it checked soon
How much does it cost to fix P11D0?
The estimated repair cost for P11D0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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