P11CC
Nox Sensor 1 Performance Signal Low
P11CC is an OBD-II diagnostic trouble code meaning: Nox Sensor 1 Performance Signal Low. Common causes: nox sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $167–444.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Problems with passing technical inspection due to increased emissions
- Activating emergency engine operation
Causes
- NOx sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with power or grounding of the sensor
- ECU malfunction (rare)
How to Fix
- Check the integrity of the wiring and connectors of the NOx sensor
- Check the supply voltage and grounding of the sensor
- Clean the contacts of the sensor connector
- Replace NOx sensor if necessary
- Check and, if necessary, update the ECU firmware
Related codes
FAQ
What does the P11CC code mean?
P11CC is an OBD-II diagnostic trouble code that indicates: Nox Sensor 1 Performance Signal Low
What causes a P11CC error code?
The most common causes of P11CC include: NOx sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with power or grounding of the sensor.
How do I fix a P11CC diagnostic trouble code?
To fix P11CC: Check the integrity of the wiring and connectors of the NOx sensor. Check the supply voltage and grounding of the sensor. Clean the contacts of the sensor connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11CC?
Yes, but get it checked soon
How much does it cost to fix P11CC?
The estimated repair cost for P11CC is $167–444. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat