P11D8
O2 Pump Current Control Circuit (NOx Sensor 2)
P11D8 is an OBD-II diagnostic trouble code meaning: O2 Pump Current Control Circuit (NOx Sensor 2). Common causes: open or short circuit in o2 pump control circuit, nox 2 sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Deterioration of vehicle dynamics
- Increased fuel consumption
- Unstable engine idling
- Dips during acceleration
Causes
- Open or short circuit in O2 pump control circuit
- NOx 2 sensor malfunction
- Poor contact in the sensor connector
- Wiring harness damage
- Engine control unit malfunction
How to Fix
- Check continuity of O2 pump control circuit
- Inspect NOx 2 sensor connectors and wiring
- Check the resistance and voltage at the sensor
- If necessary, replace NOx 2 sensor
- Check and reflash the engine control unit if necessary
Related codes
FAQ
What does the P11D8 code mean?
P11D8 is an OBD-II diagnostic trouble code that indicates: O2 Pump Current Control Circuit (NOx Sensor 2)
What causes a P11D8 error code?
The most common causes of P11D8 include: Open or short circuit in O2 pump control circuit; NOx 2 sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P11D8 diagnostic trouble code?
To fix P11D8: Check continuity of O2 pump control circuit. Inspect NOx 2 sensor connectors and wiring. Check the resistance and voltage at the sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11D8?
Yes, but get it checked soon
How much does it cost to fix P11D8?
The estimated repair cost for P11D8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat