P26D4 – BMW DTC

BMW DTC P26D4 – Engine Coolant Pump Supply Voltage Circuit Low

DTC P26D4 meaning on BMW

DTC P26D4 on a BMW indicates a fault with the Engine Coolant Pump Supply Voltage Circuit. This fault code is specific to the engine coolant pump and relates to a low voltage condition in the circuit.

BMW DTC P26D4 symptoms

Symptoms of DTC P26D4 on a BMW may include:

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

BMW DTC P26D4 causes

Common causes of DTC P26D4 on a BMW include:

• Faulty engine coolant pump
• Wiring or connector issues in the coolant pump circuit
• Low coolant level
• Faulty engine coolant temperature sensor

BMW DTC P26D4 seriousness

DTC P26D4 should be addressed promptly as it can lead to engine overheating and potential damage if left unresolved. Ignoring this fault code may result in costly repairs and engine issues.

How to diagnose DTC P26D4 on BMW

To diagnose DTC P26D4 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related 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 and condition
5. Test the engine coolant temperature sensor

How to fix DTC P26D4 on BMW

To fix DTC P26D4 on a BMW, you can try the following solutions:

1. Replace the faulty engine coolant pump
2. Repair or replace any damaged wiring or connectors in the coolant pump circuit
3. Top up the coolant level and ensure it is at the correct concentration
4. Replace the engine coolant temperature sensor if necessary

How to erase DTC P26D4 on BMW

To erase DTC P26D4 on a BMW, you can clear the fault code using a diagnostic scanner. After addressing the underlying issue and fixing the problem, you can reset the fault 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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