BMW DTC P1734 – Pressure Control Solenoid ‘B’ Electrical
DTC P1734 meaning on BMW
DTC P1734 on a BMW indicates an issue with the Pressure Control Solenoid ‘B’ electrical circuit. This fault code is specific to the transmission system and points towards a problem with the electrical signal or connection related to the pressure control solenoid ‘B’.
BMW DTC P1734 symptoms
Symptoms of DTC P1734 on a BMW may include harsh shifting, delayed shifting, transmission slipping, or the transmission going into limp mode. The vehicle may also exhibit poor acceleration and decreased fuel efficiency.
BMW DTC P1734 causes
The common causes of DTC P1734 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 P1734 seriousness
DTC P1734 should be addressed promptly as it can lead to further damage to the transmission system if left unresolved. Ignoring this fault code may result in more severe transmission issues and potentially costly repairs.
How to diagnose DTC P1734 on BMW
To diagnose DTC P1734 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the pressure control solenoid ‘B’ and its wiring. They may also conduct tests to check the solenoid’s resistance and verify proper voltage supply.
How to fix DTC P1734 on BMW
Fixing DTC P1734 on a BMW involves replacing the pressure control solenoid ‘B’ if it is found to be faulty. Additionally, any damaged wiring or connectors should be repaired or replaced. Ensuring the transmission fluid level is correct and the transmission control module is functioning properly is also essential.
How to erase DTC P1734 on BMW
After fixing the underlying issue causing DTC P1734 on a BMW, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s memory and reset the transmission system. It is important to verify that the issue has been resolved before clearing the fault code.
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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