BMW DTC P173C – Pressure Control Solenoid ‘G’ Shunt Monitoring
DTC P173C meaning on BMW
The DTC P173C code on a BMW refers to an issue with the Pressure Control Solenoid ‘G’ Shunt Monitoring system. This code indicates that there is a malfunction or abnormality detected in the operation of the pressure control solenoid ‘G’ shunt monitoring circuit.
BMW DTC P173C symptoms
Symptoms of the DTC P173C code on a BMW may include erratic shifting behavior, transmission slipping, harsh shifting, or the transmission going into limp mode. The Check Engine Light may also be illuminated on the dashboard.
BMW DTC P173C causes
The DTC P173C code on a BMW can be triggered by various factors, including a faulty pressure control solenoid ‘G’, wiring issues in the shunt monitoring circuit, low transmission fluid levels, or internal transmission problems.
BMW DTC P173C seriousness
Ignoring the DTC P173C code on a BMW can lead to further damage to the transmission system, potentially resulting in costly repairs. It is important to address this issue promptly to prevent any long-term damage to the vehicle.
How to diagnose DTC P173C on BMW
To diagnose the DTC P173C code on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer system. They would then perform a visual inspection of the pressure control solenoid ‘G’ and the associated wiring to check for any visible damage or loose connections. Additionally, testing the solenoid’s resistance and checking the transmission fluid level and condition may be necessary.
How to fix DTC P173C on BMW
Fixing the DTC P173C code on a BMW may involve replacing the pressure control solenoid ‘G’ if it is found to be faulty. Repairing any damaged wiring in the shunt monitoring circuit and ensuring proper transmission fluid levels and quality are also essential steps. In some cases, a software update or reprogramming of the transmission control module may be required.
How to erase DTC P173C on BMW
To erase the DTC P173C code on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer system. Once the issue has been addressed and fixed, the code can be reset, and the Check Engine Light should turn off. It is important to ensure that the underlying problem causing the code has been resolved before clearing the 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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