P114D – BMW DTC

BMW DTC P114D – Post Catalyst Fuel Trim Via Oxygen Sensor System Too Lean (Bank 2)

DTC P114D meaning on BMW

DTC P114D on a BMW indicates a fault with the Post Catalyst Fuel Trim via Oxygen Sensor System being too lean on Bank 2. This means that the engine control module (ECM) has detected that the air-fuel mixture after the catalytic converter is too lean, indicating a potential issue with fuel delivery or air intake on Bank 2 of the engine.

BMW DTC P114D symptoms

Symptoms of DTC P114D on a BMW may include:

• Check Engine Light illuminated
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine performance

BMW DTC P114D causes

Common causes of DTC P114D on a BMW include:

• Fuel delivery issues such as a clogged fuel injector
• Vacuum leaks in the intake system
• Faulty oxygen sensor on Bank 2
• Exhaust leaks after the catalytic converter

BMW DTC P114D seriousness

While DTC P114D may not cause immediate drivability issues, it can lead to decreased fuel efficiency and potentially cause damage to the catalytic converter over time if left unresolved. It is recommended to address this fault promptly to prevent further complications.

How to diagnose DTC P114D on BMW

To diagnose DTC P114D on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the oxygen sensor on Bank 2 for any signs of damage or contamination
3. Check for vacuum leaks in the intake system
4. Test the fuel injectors on Bank 2 for proper operation
5. Inspect the exhaust system for leaks after the catalytic converter

How to fix DTC P114D on BMW

To fix DTC P114D on a BMW, you can try the following solutions:

1. Replace the oxygen sensor on Bank 2 if faulty
2. Clean or replace clogged fuel injectors
3. Repair any vacuum leaks in the intake system
4. Fix any exhaust leaks after the catalytic converter
5. Clear the fault code and reset the ECM

How to erase DTC P114D on BMW

To erase DTC P114D on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After addressing the underlying issue causing the fault code, clearing the code will reset the Check Engine Light and monitor the system for any recurring faults.

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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