P1C73 – BMW DTC

BMW DTC P1C73 – Universal Charger Extension Control Module DC/DC Converter Current Sensor Circuit Current Out of Range High

DTC P1C73 meaning on BMW

DTC P1C73 on a BMW refers to the Universal Charger Extension Control Module DC/DC Converter Current Sensor Circuit Current Out of Range High. This diagnostic trouble code indicates that the current sensor circuit within the DC/DC converter of the universal charger extension control module is detecting a current reading that is higher than the specified range.

BMW DTC P1C73 symptoms

Symptoms of DTC P1C73 on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Reduced charging efficiency of the vehicle’s battery
• Potential drivability issues

BMW DTC P1C73 causes

Possible causes of DTC P1C73 on a BMW include:

• Faulty current sensor within the DC/DC converter
• Wiring or connection issues in the current sensor circuit
• Internal faults within the universal charger extension control module

BMW DTC P1C73 seriousness

The seriousness of DTC P1C73 on a BMW depends on the underlying cause. If left unresolved, it can lead to charging system malfunctions and potential battery issues. It is recommended to address this DTC promptly to prevent further complications.

How to diagnose DTC P1C73 on BMW

To diagnose DTC P1C73 on a BMW, a comprehensive diagnostic scan tool capable of reading BMW-specific fault codes is required. The following steps can be taken:

1. Retrieve the DTC P1C73 code using a diagnostic scan tool
2. Inspect the wiring and connections in the current sensor circuit
3. Test the current sensor within the DC/DC converter for proper functionality
4. Check for any internal faults within the universal charger extension control module

How to fix DTC P1C73 on BMW

To fix DTC P1C73 on a BMW, the following steps can be taken:

1. Repair or replace any damaged wiring or connections in the current sensor circuit
2. Replace the faulty current sensor within the DC/DC converter
3. If internal faults are found in the universal charger extension control module, it may need to be replaced
4. Clear the DTC P1C73 code after completing the repairs

How to erase DTC P1C73 on BMW

To erase DTC P1C73 on a BMW, follow these steps:

1. Use a diagnostic scan tool to clear the stored fault codes
2. Ensure that the underlying issue causing the DTC has been resolved
3. Perform a test drive to confirm that the DTC does not reappear

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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