BMW DTC P1850 – Gate Select Sensor Circuit High
DTC P1850 meaning on BMW
DTC P1850 on a BMW refers to the Gate Select Sensor Circuit High. This diagnostic trouble code indicates that there is a high voltage condition detected in the gate select sensor circuit.
BMW DTC P1850 symptoms
Symptoms of DTC P1850 on a BMW may include issues with the transmission shifting smoothly, erratic shifting patterns, or the transmission not shifting at all. The vehicle may also go into limp mode to prevent further damage.
BMW DTC P1850 causes
The most common causes of DTC P1850 on a BMW include a faulty gate select sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the transmission control module.
BMW DTC P1850 seriousness
DTC P1850 should be addressed promptly to prevent further damage to the transmission system. Ignoring this fault could lead to more severe transmission issues and potentially costly repairs.
How to diagnose DTC P1850 on BMW
To diagnose DTC P1850 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer. They would then inspect the gate select sensor and its circuit for any visible damage or loose connections. Testing the sensor’s resistance and voltage levels may also be necessary to pinpoint the issue accurately.
How to fix DTC P1850 on BMW
Fixing DTC P1850 on a BMW usually involves replacing the faulty gate select sensor if it is determined to be the cause of the high voltage condition. Additionally, repairing any damaged wiring or connectors in the sensor circuit and resetting the transmission control module may be necessary to resolve the issue.
How to erase DTC P1850 on BMW
Once the underlying cause of DTC P1850 on a BMW has been fixed, the fault code can be erased using a diagnostic scanner. By clearing the code, the vehicle’s computer will reset the transmission system’s adaptations and allow for normal operation.
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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