P143D – BMW DTC

BMW DTC P143D – EVAP System Pressure Sensor/Switch Stuck

DTC P143D meaning on BMW

DTC P143D on a BMW indicates an issue with the EVAP (Evaporative Emission Control System) System Pressure Sensor/Switch being stuck. This sensor is responsible for monitoring the pressure within the EVAP system to ensure it is functioning correctly.

BMW DTC P143D symptoms

Symptoms of DTC P143D on a BMW may include:

• Check Engine Light illuminated
• Decreased fuel efficiency
• Strong fuel odor
• Problems with starting the vehicle

BMW DTC P143D causes

The common causes of DTC P143D on a BMW include:

• Faulty EVAP System Pressure Sensor/Switch
• Wiring issues or poor connections
• EVAP system leaks

BMW DTC P143D seriousness

While DTC P143D may not cause immediate drivability issues, it is important to address this problem promptly. Ignoring this fault can lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the vehicle’s emission control system.

How to diagnose DTC P143D on BMW

To diagnose DTC P143D on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code
2. Inspect the EVAP system components for any visible damage or leaks
3. Test the EVAP System Pressure Sensor/Switch for proper operation
4. Check the wiring and connections related to the sensor

How to fix DTC P143D on BMW

To fix DTC P143D on a BMW, the following steps are commonly taken:

1. Replace the faulty EVAP System Pressure Sensor/Switch
2. Repair any damaged wiring or connections
3. Address any leaks in the EVAP system
4. Clear the fault code and reset the Check Engine Light

How to erase DTC P143D on BMW

To erase DTC P143D on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s computer. Once the issue has been fixed and the fault code erased, the Check Engine Light should turn off. It is important to ensure that the underlying problem causing the fault code has been resolved before clearing it.

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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