P255D – BMW DTC

BMW DTC P255D – PTO Speed Selector Sensor/Switch 2 Circuit High

DTC P255D meaning on BMW

The DTC P255D code for BMW refers to an issue with the PTO (Power Take-Off) Speed Selector Sensor/Switch 2 Circuit registering a high voltage signal. This sensor/switch is responsible for monitoring the speed selection in vehicles equipped with a PTO system.

BMW DTC P255D symptoms

Symptoms of the DTC P255D code on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Reduced engine performance
• Transmission shifting issues
• Possible limp mode activation

BMW DTC P255D causes

Common causes of the DTC P255D code on a BMW include:

• Faulty PTO Speed Selector Sensor/Switch 2
• Wiring or connector issues in the sensor circuit
• Software glitches in the vehicle’s control module

BMW DTC P255D seriousness

While the DTC P255D code may not always result in immediate drivability issues, it is important to address it promptly to prevent potential transmission or drivability problems in the future. Ignoring the code could lead to further damage or unsafe driving conditions.

How to diagnose DTC P255D on BMW

To diagnose the DTC P255D code on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
2. Inspect the PTO Speed Selector Sensor/Switch 2 and its wiring for any visible damage or corrosion
3. Test the sensor’s voltage output and resistance to ensure it is functioning within specifications
4. Check for any related software updates or recalls from the manufacturer

How to fix DTC P255D on BMW

To fix the DTC P255D code on a BMW, the following steps may be taken:

1. Replace the faulty PTO Speed Selector Sensor/Switch 2 if it is determined to be the cause of the issue
2. Repair any damaged wiring or connectors in the sensor circuit
3. Clear the fault codes using a diagnostic scanner after the repairs have been completed
4. Perform a test drive to ensure the issue has been resolved and the code does not return

How to erase DTC P255D on BMW

To erase the DTC P255D code on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Access the scanner’s menu to clear the fault codes stored in the vehicle’s computer
3. Confirm the deletion of the DTC P255D code and check for any remaining codes
4. If no other issues are present, the code has been successfully erased

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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