BMW DTC P27E2 – Electric/Auxiliary Transmission Fluid Pump ‘B’ Pressure Too Low
DTC P27E2 meaning on BMW
The DTC P27E2 error code on BMW vehicles indicates that the Electric/Auxiliary Transmission Fluid Pump ‘B’ is experiencing low pressure. This pump is responsible for maintaining proper fluid pressure within the transmission system.
BMW DTC P27E2 symptoms
Symptoms of the DTC P27E2 code on a BMW may include:
- Transmission slipping or delayed engagement
- Harsh shifting or erratic shifting behavior
- Transmission overheating
- Transmission warning light illuminated on the dashboard
BMW DTC P27E2 causes
The low pressure in the Electric/Auxiliary Transmission Fluid Pump ‘B’ that triggers the DTC P27E2 code on BMW vehicles can be caused by various factors, including:
- Malfunctioning transmission fluid pump
- Low transmission fluid level or dirty fluid
- Electrical issues in the pump circuit
- Internal transmission leaks or blockages
BMW DTC P27E2 seriousness
Ignoring the DTC P27E2 code on a BMW can lead to serious transmission problems and potential damage if left unresolved. Driving with low transmission fluid pressure can cause further internal damage to the transmission components and result in costly repairs.
How to diagnose DTC P27E2 on BMW
To diagnose the DTC P27E2 code on a BMW, a mechanic will typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
- Inspect the transmission fluid level and condition
- Check the Electric/Auxiliary Transmission Fluid Pump ‘B’ for proper operation
- Inspect the pump circuit for any electrical faults
- Perform a pressure test on the transmission system
How to fix DTC P27E2 on BMW
Fixing the DTC P27E2 code on a BMW involves addressing the root cause of the low transmission fluid pressure. Possible solutions include:
- Replacing the Electric/Auxiliary Transmission Fluid Pump ‘B’
- Ensuring the transmission fluid level is correct and replacing it if necessary
- Repairing any electrical issues in the pump circuit
- Fixing internal leaks or blockages in the transmission system
How to erase DTC P27E2 on BMW
After fixing the underlying issue causing the DTC P27E2 code on a BMW, the fault codes can be cleared using a diagnostic scanner. This will reset the transmission system’s computer and turn off the warning light on the dashboard. It is important to verify that the issue has been resolved before clearing the codes to prevent further problems.
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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