BMW DTC P17C4 – Pressure Control Solenoid ‘B’ Sense Circuit Current Too Low
DTC P17C4 meaning on BMW
The DTC P17C4 code on a BMW indicates an issue with the Pressure Control Solenoid ‘B’ Sense Circuit Current being too low. This means that there is a problem with the electrical circuit related to the pressure control solenoid ‘B’ in the transmission system.
BMW DTC P17C4 symptoms
Symptoms of the DTC P17C4 code on a BMW may include harsh shifting, delayed shifting, transmission slipping, decreased fuel efficiency, and in some cases, the transmission may go into limp mode.
BMW DTC P17C4 causes
The common causes of the DTC P17C4 code on a BMW include a faulty pressure control solenoid ‘B’, damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or a malfunctioning transmission control module.
BMW DTC P17C4 seriousness
Ignoring the DTC P17C4 code on a BMW can lead to further damage to the transmission system, potentially resulting in complete transmission failure. It is important to address this issue promptly to prevent costly repairs.
How to diagnose DTC P17C4 on BMW
To diagnose the DTC P17C4 code on a BMW, a mechanic would typically perform a thorough inspection of the transmission system, check the transmission fluid level and condition, conduct a visual inspection of the wiring and connectors related to the pressure control solenoid ‘B’, and use a scan tool to retrieve additional fault codes and data from the transmission control module.
How to fix DTC P17C4 on BMW
Fixing the DTC P17C4 code on a BMW may involve replacing the pressure control solenoid ‘B’, repairing or replacing damaged wiring or connectors, ensuring the transmission fluid level is correct, and resetting the transmission control module. It is recommended to follow the manufacturer’s diagnostic and repair procedures for this specific fault code.
How to erase DTC P17C4 on BMW
Once the underlying issue causing the DTC P17C4 code on a BMW has been resolved, the code can be erased using a scan tool capable of clearing fault codes. After erasing the code, it is advisable to test drive the vehicle to ensure the issue has been successfully addressed and the code does not return.
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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