P261C – BMW DTC

BMW DTC P261C – Coolant Pump ‘B’ Control Circuit Low

DTC P261C meaning on BMW

DTC P261C on a BMW indicates a fault in the Coolant Pump ‘B’ Control Circuit, specifically a low voltage condition. This fault code is typically triggered when the Engine Control Module (ECM) detects that the voltage in the control circuit for the coolant pump ‘B’ is below the specified threshold.

BMW DTC P261C symptoms

Symptoms of DTC P261C on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Engine overheating
• Reduced engine performance
• Increased fuel consumption

BMW DTC P261C causes

Common causes of DTC P261C on a BMW include:

• Faulty coolant pump ‘B’
• Wiring or connector issues in the coolant pump circuit
• Defective Engine Control Module (ECM)
• Low coolant level

BMW DTC P261C seriousness

DTC P261C should be addressed promptly as it can lead to engine overheating and potential damage if left unresolved. Ignoring this fault code may result in further engine complications and increased repair costs.

How to diagnose DTC P261C on BMW

To diagnose DTC P261C on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the coolant pump ‘B’ and its wiring for any visible damage or corrosion
3. Check the coolant level and ensure it is at the proper level
4. Perform a voltage test on the coolant pump circuit to determine if the voltage is within specifications

How to fix DTC P261C on BMW

To fix DTC P261C on a BMW, you can try the following:

1. Replace the faulty coolant pump ‘B’ if it is determined to be the cause
2. Repair any damaged wiring or connectors in the coolant pump circuit
3. If the ECM is faulty, consider replacing or reprogramming it
4. Ensure the coolant level is topped up to the correct level

How to erase DTC P261C on BMW

To erase DTC P261C on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After addressing the underlying issue that triggered the fault code, you can reset the code to turn off the Check Engine Light.

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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