P26D3 – BMW DTC

BMW DTC P26D3 – Engine Coolant Pump Supply Voltage Circuit

DTC P26D3 meaning on BMW

DTC P26D3 on a BMW indicates a fault in the Engine Coolant Pump Supply Voltage Circuit. This diagnostic trouble code is triggered when the engine control module detects that the voltage supply to the engine coolant pump is outside of the expected range.

BMW DTC P26D3 symptoms

Symptoms of a DTC P26D3 on a BMW may include:

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

BMW DTC P26D3 causes

Common causes of a DTC P26D3 on a BMW include:

• Faulty engine coolant pump
• Wiring or connector issues in the coolant pump circuit
• Low coolant level
• Defective engine control module

BMW DTC P26D3 seriousness

Ignoring a DTC P26D3 on a BMW can lead to serious engine damage due to overheating. It is important to address this issue promptly to prevent further complications.

How to diagnose DTC P26D3 on BMW

To diagnose a DTC P26D3 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the engine coolant pump for proper operation
3. Check the wiring and connectors in the coolant pump circuit for any damage or corrosion
4. Verify the coolant level in the system
5. Test the engine control module for proper function

How to fix DTC P26D3 on BMW

To fix a DTC P26D3 on a BMW, the following steps may be taken:

1. Replace the faulty engine coolant pump if necessary
2. Repair or replace any damaged wiring or connectors in the coolant pump circuit
3. Top up the coolant level in the system
4. If the engine control module is found to be defective, it may need to be reprogrammed or replaced

How to erase DTC P26D3 on BMW

After the issue causing the DTC P26D3 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the trouble code from the engine control module’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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