P114D Possible Causes
- Exhaust system leak
- Clogged catalytic converter
- Faulty intake pressure sensors
- Intake manifold pressure sensors are open or short-circuited
- Intake circuit pressure sensors poor electrical connection
- Faulty fuel injector
How is Code P114D 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 warning light soon)
P114D Meaning
The diagnostic function monitors the closed-loop lambda mixture control. The Engine Control Module (ECM) sets the OBDII code when the closed-loop lambda mixture does not meet factory specifications.