BMW DTC P173F – Shift Rod 1/3 Sensor Circuit High
DTC P173F meaning on BMW
DTC P173F is a fault code that indicates an issue with the Shift Rod 1/3 Sensor Circuit being too high in a BMW vehicle. This fault code is specific to the transmission system and is usually triggered when the sensor circuit detects a voltage signal that is above the specified threshold.
BMW DTC P173F symptoms
Some common symptoms associated with DTC P173F in a BMW may include:
- Harsh shifting between gears
- Transmission slipping
- Transmission not shifting properly
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P173F causes
The potential causes of DTC P173F in a BMW can vary, but some common reasons include:
- Faulty Shift Rod 1/3 Sensor
- Wiring or connector issues in the sensor circuit
- Low transmission fluid level
- Internal transmission problems
BMW DTC P173F seriousness
Ignoring DTC P173F in a BMW can lead to further transmission issues and potential damage if not addressed promptly. It is recommended to diagnose and fix the problem as soon as possible to prevent more severe problems down the line.
How to diagnose DTC P173F on BMW
To diagnose DTC P173F on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and any related codes.
- Inspect the Shift Rod 1/3 Sensor and its wiring for any visible damage or corrosion.
- Check the transmission fluid level and condition.
- Perform a thorough visual inspection of the transmission system for any leaks or other issues.
How to fix DTC P173F on BMW
To fix DTC P173F on a BMW, you can try the following solutions:
- Replace the faulty Shift Rod 1/3 Sensor.
- Repair or replace any damaged wiring or connectors in the sensor circuit.
- Ensure the transmission fluid level is correct and top up if necessary.
- If internal transmission problems are suspected, consult a professional mechanic for further diagnosis and repair.
How to erase DTC P173F on BMW
To erase DTC P173F on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After fixing the underlying issue causing the fault code, you can then reset the code to turn off the Check Engine Light and ensure the problem 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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