BMW DTC P17C9 – Pressure Control Solenoid ‘G’ Sense Circuit Current Too Low
DTC P17C9 meaning on BMW
The DTC P17C9 code on a BMW indicates that the Pressure Control Solenoid ‘G’ Sense Circuit is reporting a current that is too low. This typically points to an issue with the electrical circuit or the solenoid itself.
BMW DTC P17C9 symptoms
Symptoms of the DTC P17C9 code on a BMW may include harsh shifting, transmission slipping, poor acceleration, and in some cases, the transmission may go into limp mode. The Check Engine Light may also be illuminated on the dashboard.
BMW DTC P17C9 causes
The common causes of the DTC P17C9 code on a BMW include a faulty pressure control solenoid ‘G’, damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or a malfunctioning transmission control module.
BMW DTC P17C9 seriousness
Ignoring the DTC P17C9 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.
How to diagnose DTC P17C9 on BMW
To diagnose the DTC P17C9 code 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 pressure control solenoid ‘G’ and its circuit for any visible damage or loose connections. Testing the solenoid’s resistance and checking the transmission fluid level may also be necessary.
How to fix DTC P17C9 on BMW
Fixing the DTC P17C9 code on a BMW may involve replacing the pressure control solenoid ‘G’ if it is found to be faulty. Repairing or replacing any damaged wiring or connectors in the circuit is also essential. Additionally, ensuring the transmission fluid is at the correct level and in good condition can help resolve the issue.
How to erase DTC P17C9 on BMW
Once the underlying issue causing the DTC P17C9 code on a BMW has been addressed and fixed, the code can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the fault code from the vehicle’s computer memory.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.