BMW DTC P246D – Particulate Filter Pressure Sensor ‘A’/’B’ Correlation
DTC P246D meaning on BMW
DTC P246D indicates a correlation problem between the Particulate Filter Pressure Sensor ‘A’ and Particulate Filter Pressure Sensor ‘B’ in a BMW vehicle. This fault code is specific to the diesel particulate filter system, which is responsible for reducing harmful emissions by trapping and burning particulate matter.
BMW DTC P246D symptoms
Symptoms of DTC P246D in a BMW may include:
- Check Engine Light (CEL) illuminated
- Reduced engine power
- Increased fuel consumption
- Excessive black smoke from the exhaust
BMW DTC P246D causes
The common causes of DTC P246D in a BMW are:
- Malfunctioning Particulate Filter Pressure Sensor ‘A’ or ‘B’
- Wiring or connector issues in the sensor circuit
- Software or calibration errors
BMW DTC P246D seriousness
DTC P246D should not be ignored as it can lead to increased emissions, reduced engine performance, and potential damage to the diesel particulate filter system. Continuing to drive with this fault may result in further engine issues and could lead to costly repairs.
How to diagnose DTC P246D on BMW
To diagnose DTC P246D on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the Particulate Filter Pressure Sensors ‘A’ and ‘B’ for proper operation
- Check the wiring and connectors for any damage or corrosion
- Perform a diesel particulate filter regeneration to see if the fault clears
How to fix DTC P246D on BMW
To fix DTC P246D on a BMW, the following steps may be taken:
- Replace the faulty Particulate Filter Pressure Sensor ‘A’ or ‘B’
- Repair any damaged wiring or connectors in the sensor circuit
- Update the software or calibration of the engine control module
- Perform a diesel particulate filter regeneration to clear the fault code
How to erase DTC P246D on BMW
To erase DTC P246D on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair or maintenance has been completed, the mechanic can reset the fault code and clear the Check Engine Light from the vehicle’s system.
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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