P11C4 – BMW DTC

BMW DTC P11C4 – EVAP System Differential Pressure Sensor Circuit Range/Performance

DTC P11C4 meaning on BMW

DTC P11C4 on a BMW refers to a fault with the EVAP (Evaporative Emission Control System) System Differential Pressure Sensor Circuit. This diagnostic trouble code indicates that the signal from the differential pressure sensor is outside the expected range or performance parameters.

BMW DTC P11C4 symptoms

Symptoms of DTC P11C4 on a BMW may include:

• Check Engine Light illuminated
• Decreased fuel efficiency
• Engine running rough or stalling
• Increased emissions

BMW DTC P11C4 causes

Common causes of DTC P11C4 on a BMW include:

• Faulty EVAP system differential pressure sensor
• Wiring or connector issues in the sensor circuit
• EVAP system leaks or blockages

BMW DTC P11C4 seriousness

While DTC P11C4 may not cause immediate drivability issues, it is important to address this fault promptly. Ignoring this fault can lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the vehicle’s emissions control system.

How to diagnose DTC P11C4 on BMW

To diagnose DTC P11C4 on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the EVAP system components for leaks or damage
3. Check the wiring and connectors in the differential pressure sensor circuit
4. Test the differential pressure sensor for proper operation

How to fix DTC P11C4 on BMW

To fix DTC P11C4 on a BMW, the following steps may be taken:

1. Replace the faulty EVAP system differential pressure sensor
2. Repair any damaged wiring or connectors in the sensor circuit
3. Address any leaks or blockages in the EVAP system
4. Clear the fault code and perform a test drive to ensure the issue is resolved

How to erase DTC P11C4 on BMW

To erase DTC P11C4 on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been completed and the issue resolved, the code can be cleared to reset the Check Engine Light and ensure the fault does not reoccur.

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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