BMW DTC P114C – Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich (Bank 2)
DTC P114C meaning on BMW
DTC P114C on a BMW indicates a fault with the Post Catalyst Fuel Trim via Oxygen Sensor System being too rich on Bank 2. This means that the engine control module (ECM) has detected that the air-fuel mixture after the catalytic converter is too rich, indicating an imbalance in the fuel delivery system.
BMW DTC P114C symptoms
Symptoms of DTC P114C on a BMW may include decreased fuel efficiency, rough idling, engine misfires, hesitation during acceleration, and the illumination of the check engine light on the dashboard.
BMW DTC P114C causes
The common causes of DTC P114C on a BMW include a faulty oxygen sensor, a vacuum leak in the intake system, a malfunctioning fuel injector, a clogged air filter, or issues with the fuel pressure regulator.
BMW DTC P114C seriousness
While DTC P114C may not cause immediate drivability issues, it can lead to decreased engine performance and increased emissions. Ignoring this fault code can potentially cause damage to the catalytic converter and other engine components over time.
How to diagnose DTC P114C on BMW
To diagnose DTC P114C on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a thorough inspection of the oxygen sensor, intake system, fuel injectors, air filter, and fuel pressure regulator to identify the root cause of the rich fuel trim condition.
How to fix DTC P114C on BMW
Fixing DTC P114C on a BMW involves addressing the underlying cause of the rich fuel trim condition. This may include replacing a faulty oxygen sensor, repairing a vacuum leak, cleaning or replacing clogged fuel injectors, replacing the air filter, or fixing issues with the fuel pressure regulator.
How to erase DTC P114C on BMW
Once the underlying issue causing DTC P114C on a BMW has been fixed, the fault code can be erased using a diagnostic scanner. By clearing the code, the check engine light will turn off, indicating that the issue has been resolved.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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