P11C8
NOx Sensor 2 Heater Ground Circuit High
P11C8 is an OBD-II diagnostic trouble code meaning: NOx Sensor 2 Heater Ground Circuit High. Common causes: broken or damaged wires in the grounding circuit, poor contact in nox sensor connector. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Deteriorating fuel economy
- Problems with passing technical inspection (due to increased emissions)
- Rough engine idling
Causes
- Broken or damaged wires in the grounding circuit
- Poor contact in NOx sensor connector
- Corrosion at grounding points
- Malfunction of the NOx sensor itself
- Problems with the engine control unit
How to Fix
- Check the integrity of the wiring in the grounding circuit
- Clean the contacts in the sensor connectors
- Check grounding points for corrosion
- Test the NOx sensor with a multimeter
- If necessary, replace the NOx sensor
Related codes
FAQ
What does the P11C8 code mean?
P11C8 is an OBD-II diagnostic trouble code that indicates: NOx Sensor 2 Heater Ground Circuit High
What causes a P11C8 error code?
The most common causes of P11C8 include: Broken or damaged wires in the grounding circuit; Poor contact in NOx sensor connector; Corrosion at grounding points; Malfunction of the NOx sensor itself.
How do I fix a P11C8 diagnostic trouble code?
To fix P11C8: Check the integrity of the wiring in the grounding circuit. Clean the contacts in the sensor connectors. Check grounding points for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11C8?
Yes, but get it checked soon
How much does it cost to fix P11C8?
The estimated repair cost for P11C8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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