BMW DTC P2729 – Pressure Control Solenoid ‘E’ Control Circuit Low
DTC P2729 meaning on BMW
DTC P2729 indicates a fault with the Pressure Control Solenoid ‘E’ control circuit in a BMW vehicle. This fault is triggered when the Engine Control Module (ECM) detects that the voltage signal from the pressure control solenoid ‘E’ is lower than the specified range.
BMW DTC P2729 symptoms
Symptoms of DTC P2729 in a BMW may include harsh shifting, delayed gear engagement, transmission slipping, decreased fuel efficiency, and in some cases, the transmission may go into a fail-safe or limp mode.
BMW DTC P2729 causes
The common causes of DTC P2729 in a BMW include a faulty pressure control solenoid ‘E’, damaged wiring or connectors in the control circuit, low transmission fluid level, or a malfunctioning ECM.
BMW DTC P2729 seriousness
Ignoring DTC P2729 in 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 P2729 on BMW
To diagnose DTC P2729 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 ‘E’, check the wiring and connectors for any damage, and ensure the transmission fluid level is adequate.
How to fix DTC P2729 on BMW
Fixing DTC P2729 on a BMW may involve replacing the pressure control solenoid ‘E’, repairing any damaged wiring or connectors, topping up the transmission fluid, or reprogramming the ECM. It is recommended to follow the manufacturer’s repair procedures for a proper fix.
How to erase DTC P2729 on BMW
Once the underlying issue causing DTC P2729 has been resolved on a BMW, the fault codes can be cleared using a diagnostic scanner. This will erase the DTC P2729 code from the ECM’s memory and reset the transmission system. It is important to ensure that the repair has been successful before clearing the fault codes.
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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