BMW DTC P1C4D – Universal Charger Extension Control Module Crash Clamp Voltage Sensor Circuit Voltage Out of Range Low
DTC P1C4D meaning on BMW
- DTC: Diagnostic Trouble Code
- P1C4D: Universal Charger Extension Control Module Crash Clamp Voltage Sensor Circuit Voltage Out of Range Low
- On BMW vehicles, this code indicates an issue with the voltage sensor circuit related to the crash clamp in the universal charger extension control module.
BMW DTC P1C4D symptoms
- Illuminated check engine light
- Reduced charging performance
- Erratic behavior of the charging system
BMW DTC P1C4D causes
- Faulty voltage sensor
- Wiring issues in the voltage sensor circuit
- Connection problems in the crash clamp
BMW DTC P1C4D seriousness
- If left unresolved, this issue can lead to improper charging of the vehicle’s battery, potentially causing starting or electrical system problems.
- It is recommended to address this code promptly to avoid further complications.
How to diagnose DTC P1C4D on BMW
- Use a diagnostic scanner to retrieve the fault codes and perform a comprehensive scan of the charging system.
- Inspect the wiring and connections related to the voltage sensor circuit and crash clamp for any visible damage or corrosion.
- Test the voltage sensor for proper functionality using a multimeter.
How to fix DTC P1C4D on BMW
- Replace the faulty voltage sensor if it is determined to be the cause of the issue.
- Repair any damaged wiring or connections in the circuit.
- Clean and secure the connections in the crash clamp to ensure proper contact.
How to erase DTC P1C4D on BMW
- After addressing the root cause of the issue, use a diagnostic scanner to clear the fault codes from the vehicle’s system.
- Ensure that the repairs have been completed successfully before clearing the code.
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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