P0C4D – BMW DTC

BMW DTC P0C4D – Hybrid/EV Battery Pack Coolant Pump Supply Voltage Circuit High

DTC P0C4D meaning on BMW

DTC P0C4D on a BMW indicates a fault in the Hybrid/EV Battery Pack Coolant Pump Supply Voltage Circuit. This fault code is specific to the hybrid or electric vehicles that have a battery pack coolant system.

BMW DTC P0C4D symptoms

Symptoms of DTC P0C4D on a BMW may include:

• Check Engine Light illuminated
• Hybrid/EV system warning light on
• Reduced hybrid/EV system performance
• Overheating of the battery pack

BMW DTC P0C4D causes

Common causes of DTC P0C4D on a BMW include:

• Faulty battery pack coolant pump
• Issues with the coolant pump supply voltage circuit
• Wiring or connector problems

BMW DTC P0C4D seriousness

The seriousness of DTC P0C4D on a BMW lies in the potential impact on the hybrid or electric vehicle system. Ignoring this fault code can lead to overheating of the battery pack, reduced efficiency, and potential damage to the vehicle’s components.

How to diagnose DTC P0C4D on BMW

To diagnose DTC P0C4D 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 battery pack coolant pump and its connections for any visible damage
3. Check the voltage supply to the coolant pump using a multimeter
4. Inspect the wiring and connectors related to the coolant pump circuit

How to fix DTC P0C4D on BMW

To fix DTC P0C4D on a BMW, you may need to:

1. Replace the faulty battery pack coolant pump
2. Repair any damaged wiring or connectors in the coolant pump circuit
3. Ensure proper voltage supply to the coolant pump
4. Clear the fault code and test the vehicle

How to erase DTC P0C4D on BMW

To erase DTC P0C4D on a BMW, you can:

1. Use a diagnostic scanner to clear the fault code
2. After fixing the underlying issue, perform a test drive to ensure the fault does not reoccur

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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