BMW DTC P27DD – Pressure Control Solenoid ¿T¿ Control Circuit/Open
DTC P27DD meaning on BMW
DTC P27DD on a BMW indicates an issue with the Pressure Control Solenoid ¨T¨ Control Circuit being open. This means that the engine control module (ECM) is unable to properly control the pressure in the transmission due to a fault in the solenoid circuit.
BMW DTC P27DD symptoms
Symptoms of DTC P27DD on a BMW may include harsh shifting, delayed engagement when shifting gears, transmission slipping, and in some cases, the transmission may go into limp mode. The Check Engine Light may also be illuminated on the dashboard.
BMW DTC P27DD causes
The common causes of DTC P27DD on a BMW include a faulty Pressure Control Solenoid ¨T¨, damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or a malfunctioning ECM.
BMW DTC P27DD seriousness
Ignoring DTC P27DD 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 P27DD on BMW
To diagnose DTC P27DD on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes from the ECM. They would then inspect the Pressure Control Solenoid ¨T¨ and its circuit for any visible damage or loose connections. Testing the solenoid’s resistance and checking the transmission fluid level would also be part of the diagnostic process.
How to fix DTC P27DD on BMW
Fixing DTC P27DD on a BMW may involve replacing the faulty Pressure Control Solenoid ¨T¨, repairing any damaged wiring or connectors in the circuit, ensuring the transmission fluid level is correct, and resetting the ECM. It is recommended to follow the manufacturer’s repair procedures or seek assistance from a qualified mechanic.
How to erase DTC P27DD on BMW
To erase DTC P27DD on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the ECM. After the repair has been completed, the mechanic can reset the Check Engine Light and verify that the issue has been resolved.
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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