📌 Meaning of Code P114C
Code P114C indicates a malfunction in the air/fuel mixture regulation in the closed-loop lambda system.
The Engine Control Module (ECM) monitors this system to ensure the mixture meets factory specifications. If it does not, the code is triggered.
🚨 Possible Symptoms
- Check Engine light or engine/service warning light illuminated
- Potential increased fuel consumption
- Higher pollutant emissions
- Irregular engine operation (in some cases)
❗ Possible Causes
- Exhaust system leak
- Faulty oxygen sensor (pre-catalyst or post-catalyst)
- Oxygen sensor wiring harness damaged (open or short circuit)
- Faulty electrical connection in the oxygen sensor circuit
- Defective DME (Digital Motor Electronics)
🛠️ How to Fix MINI Code P114C
- Start by checking the possible causes listed above.
- Visually inspect:
- The oxygen sensor wiring harness
- The connectors (look for broken, bent, pushed back, or corroded pins)
- Check for an exhaust leak before or around the lambda sensors.
- Test the oxygen sensor(s) using a diagnostic tool.
- If a DME failure is suspected, consult a professional with the appropriate equipment.