P11C6
NOx Sensor 1 Heater Ground Circuit High
P11C6 is an OBD-II diagnostic trouble code meaning: NOx Sensor 1 Heater Ground Circuit High. Common causes: broken or damaged ground wire, oxidation of contacts in connectors. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Deterioration of vehicle dynamics
- Increased fuel consumption
- Unstable engine idling
- Increased emissions of harmful substances
Causes
- Broken or damaged ground wire
- Oxidation of contacts in connectors
- NOx sensor heating element malfunction
- Problems with the engine control unit
- Corrosion at joints
How to Fix
- Check the integrity of the grounding circuit
- Clean sensor connector contacts
- Measure the resistance of the heating element
- Check the voltage at the sensor connector
- If necessary, replace NOx sensor 1
Related codes
FAQ
What does the P11C6 code mean?
P11C6 is an OBD-II diagnostic trouble code that indicates: NOx Sensor 1 Heater Ground Circuit High
What causes a P11C6 error code?
The most common causes of P11C6 include: Broken or damaged ground wire; Oxidation of contacts in connectors; NOx sensor heating element malfunction; Problems with the engine control unit.
How do I fix a P11C6 diagnostic trouble code?
To fix P11C6: Check the integrity of the grounding circuit. Clean sensor connector contacts. Measure the resistance of the heating element. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11C6?
Yes, but get it checked soon
How much does it cost to fix P11C6?
The estimated repair cost for P11C6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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