BMW DTC P1815 – Wheel Plus Switch Error Circuit Low
DTC P1815 meaning on BMW
DTC P1815 on a BMW refers to the Wheel Speed Signal Plausibility error. This fault code indicates that there is a circuit low issue with the wheel speed sensor switch.
BMW DTC P1815 symptoms
Symptoms of DTC P1815 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Loss of stability control
- Erratic speedometer readings
BMW DTC P1815 causes
The common causes of DTC P1815 on a BMW include:
- Faulty wheel speed sensor
- Wiring or connection issues in the wheel speed sensor circuit
- Corrosion or damage to the sensor or its wiring
BMW DTC P1815 seriousness
DTC P1815 should be addressed promptly as it can affect the proper functioning of the vehicle’s ABS and stability control systems. Driving with this fault unresolved may compromise safety and handling.
How to diagnose DTC P1815 on BMW
To diagnose DTC P1815 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the wheel speed sensor and its wiring for any visible damage or corrosion
- Test the wheel speed sensor using a multimeter to check for proper resistance and signal output
- Check the connections and wiring harness for any loose or damaged connections
How to fix DTC P1815 on BMW
To fix DTC P1815 on a BMW, you can try the following solutions:
- Replace the faulty wheel speed sensor
- Repair or replace any damaged wiring or connections in the sensor circuit
- Clean any corrosion from the sensor or its connectors
- Clear the fault code and perform a test drive to ensure the issue is resolved
How to erase DTC P1815 on BMW
To erase DTC P1815 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After clearing the code, it is recommended to perform a test drive to confirm that the issue has been resolved.
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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