BMW DTC P2805 – Transmission Range Sensor ‘A’/’B’ Correlation
DTC P2805 meaning on BMW
The Diagnostic Trouble Code (DTC) P2805 for BMW indicates a transmission range sensor ‘A’/’B’ correlation issue. This means that there is a discrepancy between the signals being received from the transmission range sensor ‘A’ and ‘B’, which are responsible for determining the gear position of the vehicle.
BMW DTC P2805 symptoms
Symptoms of DTC P2805 on a BMW may include erratic shifting behavior, difficulty shifting gears, the transmission getting stuck in a particular gear, or the transmission not engaging properly. In some cases, the vehicle may go into a limp mode to prevent further damage.
BMW DTC P2805 causes
The most common causes of DTC P2805 on a BMW include a faulty transmission range sensor, damaged wiring or connectors related to the sensor, or a misalignment of the sensor. Additionally, issues with the transmission control module (TCM) or software glitches can also trigger this fault code.
BMW DTC P2805 seriousness
DTC P2805 should be addressed promptly as it can lead to drivability issues and potential transmission damage if left unresolved. Ignoring this fault code may result in further complications and costly repairs down the line.
How to diagnose DTC P2805 on BMW
To diagnose DTC P2805 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a thorough inspection of the transmission range sensor ‘A’ and ‘B’. They would check for any visible damage to the sensor, wiring, or connectors, and test the sensor’s functionality using specialized tools.
How to fix DTC P2805 on BMW
Fixing DTC P2805 on a BMW usually involves replacing the faulty transmission range sensor, repairing any damaged wiring or connectors, and ensuring proper alignment of the sensor. In some cases, updating the TCM software may also be necessary to resolve the correlation issue between the sensors.
How to erase DTC P2805 on BMW
Once the underlying issue causing DTC P2805 on a BMW has been fixed, the fault code can be erased using a diagnostic scanner. By clearing the code, the vehicle’s onboard computer will reset and monitor the system for any recurring faults. It is important to ensure that the repair has been successful before clearing the fault code.
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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