BMW DTC P170C – Pressure Control Solenoid ‘C’ Shunt Monitoring
DTC P170C meaning on BMW
The DTC P170C for BMW refers to an issue with the Pressure Control Solenoid ‘C’ Shunt Monitoring. This diagnostic trouble code indicates that there is a problem with the monitoring of the pressure control solenoid ‘C’ in the transmission system.
BMW DTC P170C symptoms
Symptoms of the BMW DTC P170C may include harsh shifting, delayed shifting, transmission slipping, poor acceleration, and in some cases, the transmission may go into a failsafe mode to prevent further damage.
BMW DTC P170C causes
The common causes of the BMW DTC P170C include a faulty pressure control solenoid ‘C’, wiring issues, low transmission fluid level, or a malfunctioning transmission control module.
BMW DTC P170C seriousness
Ignoring the DTC P170C 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.
How to diagnose DTC P170C on BMW
To diagnose the DTC P170C on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes from the transmission control module. They would then perform a visual inspection of the wiring and connectors related to the pressure control solenoid ‘C’ and conduct tests to check the solenoid’s functionality.
How to fix DTC P170C on BMW
Fixing the DTC P170C on a BMW may involve replacing the pressure control solenoid ‘C’ if it is found to be faulty. Additionally, addressing any wiring issues, ensuring the transmission fluid level is correct, and resetting the transmission adaptations may help resolve the problem.
How to erase DTC P170C on BMW
To erase the DTC P170C on a BMW, a mechanic would typically use a diagnostic scanner to clear the fault codes stored in the transmission control module. Once the issue has been addressed and fixed, the fault codes can be cleared to reset the system.
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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