P11DA
O2 Pump Current Control Circuit High Voltage (NOx Sensor 2)
P11DA is an OBD-II diagnostic trouble code meaning: O2 Pump Current Control Circuit High Voltage (NOx Sensor 2). Common causes: nox 2 sensor malfunction, damage to the sensor wiring harness. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Deterioration of engine performance
- Increased fuel consumption
- Increase in harmful emissions
- Possible problems with the SCR system
Causes
- NOx 2 sensor malfunction
- Damage to the sensor wiring harness
- Short circuit in control circuit
- Problems with the engine control unit
- Corrosion of electrical contacts
How to Fix
- Check the condition of the NOx sensor 2 wiring harness
- Check control circuit voltage
- Test NOx sensor 2
- Replace sensor if necessary
- Check and clean electrical contacts
Related codes
FAQ
What does the P11DA code mean?
P11DA is an OBD-II diagnostic trouble code that indicates: O2 Pump Current Control Circuit High Voltage (NOx Sensor 2)
What causes a P11DA error code?
The most common causes of P11DA include: NOx 2 sensor malfunction; Damage to the sensor wiring harness; Short circuit in control circuit; Problems with the engine control unit.
How do I fix a P11DA diagnostic trouble code?
To fix P11DA: Check the condition of the NOx sensor 2 wiring harness. Check control circuit voltage. Test NOx sensor 2. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11DA?
Yes, but get it checked soon
How much does it cost to fix P11DA?
The estimated repair cost for P11DA is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat