BMW DTC P1C46 – Universal Charger Extension Control Module Charge Enable Voltage Sensor Circuit Low
DTC P1C46 meaning on BMW
DTC P1C46 is a fault code that indicates an issue with the Universal Charger Extension Control Module Charge Enable Voltage Sensor Circuit being low in a BMW vehicle. This fault code is specific to BMW vehicles and is related to the charging system.
BMW DTC P1C46 symptoms
Symptoms of DTC P1C46 in a BMW may include issues with the charging system, such as slow or incomplete charging of the battery, inability to charge the battery, or intermittent charging problems. The vehicle may also display a warning light on the dashboard related to the charging system.
BMW DTC P1C46 causes
The causes of DTC P1C46 in a BMW can vary, but common reasons include a faulty Universal Charger Extension Control Module, damaged wiring or connectors in the charge enable voltage sensor circuit, or a malfunctioning charge enable voltage sensor itself.
BMW DTC P1C46 seriousness
DTC P1C46 should be addressed promptly as it directly affects the charging system of the vehicle. Ignoring this fault code can lead to battery-related issues, which may result in the vehicle not starting or other electrical system malfunctions.
How to diagnose DTC P1C46 on BMW
To diagnose DTC P1C46 on a BMW, a diagnostic scan tool capable of reading BMW fault codes is required. The technician should inspect the Universal Charger Extension Control Module, check the wiring and connectors in the charge enable voltage sensor circuit for any damage, and test the charge enable voltage sensor for proper functionality.
How to fix DTC P1C46 on BMW
Fixing DTC P1C46 on a BMW may involve replacing the faulty Universal Charger Extension Control Module, repairing any damaged wiring or connectors in the charge enable voltage sensor circuit, or replacing the charge enable voltage sensor if necessary. It is recommended to follow the manufacturer’s repair procedures and use genuine BMW parts for the best results.
How to erase DTC P1C46 on BMW
After the issue causing DTC P1C46 has been fixed, the fault code can be erased using a diagnostic scan tool that supports clearing fault codes. Once the repair is completed, the technician can clear the DTC P1C46 code from the vehicle’s memory, and the warning light related to the charging system should no longer be illuminated.
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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