BMW DTC P261B – Coolant Pump ‘B’ Control Circuit Performance/Stuck Off
DTC P261B meaning on BMW
DTC P261B indicates an issue with the Coolant Pump ‘B’ Control Circuit on a BMW vehicle. This code is triggered when the Engine Control Module (ECM) detects that the performance of the coolant pump control circuit is outside the expected range or that the pump is stuck in the off position.
BMW DTC P261B symptoms
Symptoms of DTC P261B on a BMW may include:
- Engine overheating
- Temperature gauge reading high
- Check Engine Light (CEL) illuminated
- Reduced engine performance
BMW DTC P261B causes
Common causes of DTC P261B on a BMW include:
- Defective coolant pump ‘B’
- Faulty coolant pump control module
- Wiring or connection issues in the coolant pump circuit
- Low coolant level
BMW DTC P261B seriousness
Ignoring DTC P261B on a BMW can lead to serious engine damage due to overheating. It is important to address this issue promptly to prevent potential engine failure.
How to diagnose DTC P261B on BMW
To diagnose DTC P261B on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the coolant pump ‘B’ and its control circuit for any visible damage
- Check the coolant level and ensure there are no leaks
- Test the coolant pump control module for proper function
- Verify the wiring and connections in the coolant pump circuit
How to fix DTC P261B on BMW
To fix DTC P261B on a BMW, the following steps may be taken:
- Replace the faulty coolant pump ‘B’
- Repair or replace any damaged wiring or connections in the coolant pump circuit
- Replace the coolant pump control module if necessary
- Ensure the coolant level is topped up and there are no leaks
How to erase DTC P261B on BMW
After fixing the underlying issue causing DTC P261B on a BMW, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the DTC from the ECM’s memory.
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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