BMW DTC P187B – Transmission Fluid Temperature Sensor ‘A’ Higher Temperature Out Of Range
DTC P187B meaning on BMW
The DTC P187B on a BMW indicates that the Transmission Fluid Temperature Sensor ‘A’ is reporting a higher temperature that is out of the expected range. This sensor is responsible for monitoring the temperature of the transmission fluid to ensure optimal performance and prevent overheating.
BMW DTC P187B symptoms
Symptoms of the DTC P187B on a BMW may include:
- Check Engine Light illuminated
- Transmission shifting issues
- Reduced fuel efficiency
- Transmission overheating
BMW DTC P187B causes
Common causes of the DTC P187B on a BMW include:
- Faulty Transmission Fluid Temperature Sensor ‘A’
- Wiring or connector issues in the sensor circuit
- Low transmission fluid level
- Transmission fluid contamination
BMW DTC P187B seriousness
The DTC P187B should not be ignored as it can lead to potential transmission damage if the issue is not addressed promptly. Driving with a malfunctioning transmission fluid temperature sensor can cause overheating and premature wear on transmission components.
How to diagnose DTC P187B on BMW
To diagnose the DTC P187B on a BMW, a mechanic will typically:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the Transmission Fluid Temperature Sensor ‘A’ and its wiring for any visible damage
- Check the transmission fluid level and condition
- Perform a test drive to monitor transmission performance
How to fix DTC P187B on BMW
To fix the DTC P187B on a BMW, the following steps may be taken:
- Replace the faulty Transmission Fluid Temperature Sensor ‘A’
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Ensure the transmission fluid level is correct and free of contamination
- Clear the fault code and reset the Check Engine Light
How to erase DTC P187B on BMW
To erase the DTC P187B on a BMW, the fault code can be cleared using a diagnostic scanner. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light and ensure that the repair was successful.
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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