BMW DTC P27C4 – Pressure Control Solenoid ‘P’ Intermittent
DTC P27C4 meaning on BMW
The DTC P27C4 on a BMW indicates an intermittent issue with the Pressure Control Solenoid ‘P’. This fault code is related to the transmission system and specifically points to a problem with the solenoid that controls hydraulic pressure within the transmission.
BMW DTC P27C4 symptoms
Symptoms of the DTC P27C4 on a BMW may include erratic shifting behavior, harsh shifting, transmission slipping, or the transmission going into limp mode. The vehicle may also exhibit a decrease in fuel efficiency and overall performance.
BMW DTC P27C4 causes
The DTC P27C4 on a BMW can be caused by various factors, including a faulty pressure control solenoid ‘P’, wiring issues, low transmission fluid level, contaminated transmission fluid, or internal transmission problems.
BMW DTC P27C4 seriousness
The DTC P27C4 is a serious issue that should be addressed promptly. Ignoring this fault code can lead to further damage to the transmission system, potentially resulting in costly repairs or even transmission failure.
How to diagnose DTC P27C4 on BMW
To diagnose the DTC P27C4 on a BMW, a mechanic would typically start by using a diagnostic scan tool to retrieve the fault code and perform a thorough inspection of the transmission system. This may involve checking the wiring connections, testing the pressure control solenoid ‘P’, inspecting the transmission fluid level and condition, and conducting a road test to observe the transmission’s behavior.
How to fix DTC P27C4 on BMW
Fixing the DTC P27C4 on a BMW may involve replacing the pressure control solenoid ‘P’ if it is found to be faulty. Additionally, addressing any wiring issues, ensuring the transmission fluid is at the correct level and in good condition, and performing a transmission flush or repair as needed can help resolve this fault code.
How to erase DTC P27C4 on BMW
To erase the DTC P27C4 on a BMW, a mechanic can use a diagnostic scan tool to clear the fault code from the vehicle’s computer system. However, it is important to first address and fix the underlying issue causing the fault code before clearing it to prevent it from reoccurring.
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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