Possible Causes of P11CC
- Faulty Nox sensor 1
- Nox sensor 1 harness is open or shorted
- Poor electrical connection in Nox sensor 1 circuit
- Intake system leaks
- Exhaust system leaks
How is P11CC Code Repaired?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service soon warning light)
Meaning of P11CC
The Powertrain Control Module (PCM) monitors the Nox sensor 1. The PCM sets the OBDII code when the Nox sensor 1 does not meet factory specifications.