BMW DTC P1C84 – Universal Charger Extension Control Module DC/DC Converter Resonant Inductor Temperature Sensor Circuit Range/Performance
DTC P1C84 meaning on BMW
The DTC P1C84 fault code on BMW vehicles refers to an issue with the Universal Charger Extension Control Module DC/DC Converter Resonant Inductor Temperature Sensor Circuit. This code indicates that the temperature sensor circuit for the resonant inductor within the DC/DC converter module is operating outside the expected range or is not performing as intended.
BMW DTC P1C84 symptoms
Symptoms of the DTC P1C84 fault code on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced charging efficiency for the vehicle’s battery
- Potential issues with the vehicle’s charging system
BMW DTC P1C84 causes
The DTC P1C84 fault code on BMW vehicles can be caused by various factors, including:
- Faulty temperature sensor within the resonant inductor circuit
- Wiring or connection issues in the temperature sensor circuit
- Internal faults within the DC/DC converter module
BMW DTC P1C84 seriousness
The seriousness of the DTC P1C84 fault code on a BMW depends on the underlying cause. While the vehicle may still be operational with this fault, it is essential to address the issue promptly to prevent potential damage to the charging system and ensure optimal performance.
How to diagnose DTC P1C84 on BMW
To diagnose the DTC P1C84 fault code on a BMW, a comprehensive diagnostic scan using a BMW-specific diagnostic tool is recommended. The following steps can help in the diagnosis process:
- Retrieve the fault codes stored in the vehicle’s computer system
- Inspect the wiring and connections in the temperature sensor circuit
- Test the functionality of the temperature sensor within the resonant inductor circuit
- Check for any internal faults within the DC/DC converter module
How to fix DTC P1C84 on BMW
Fixing the DTC P1C84 fault code on a BMW may involve the following steps:
- Replace the faulty temperature sensor within the resonant inductor circuit
- Repair any wiring or connection issues in the temperature sensor circuit
- If internal faults are detected in the DC/DC converter module, consider replacing the module
- Clear the fault codes and perform a test drive to ensure the issue has been resolved
How to erase DTC P1C84 on BMW
To erase the DTC P1C84 fault code on a BMW, follow these steps:
- Use a BMW-specific diagnostic tool to clear the fault codes stored in the vehicle’s computer system
- Ensure that the underlying issue causing the fault code has been addressed before clearing the code
- Perform a test drive to confirm that the fault code 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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.