P04C4 – BMW DTC

BMW DTC P04C4 – Fuel Fill Door Lock Position Sensor/Switch Circuit Range/Performance

DTC P04C4 meaning on BMW

The DTC P04C4 fault code on a BMW indicates an issue with the Fuel Fill Door Lock Position Sensor/Switch Circuit Range/Performance. This means that the sensor or switch responsible for detecting the position of the fuel fill door lock is not functioning within the expected range or is not performing as intended.

BMW DTC P04C4 symptoms

Symptoms of the DTC P04C4 code on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Difficulty opening or closing the fuel fill door
• Intermittent issues with the fuel fill door lock

BMW DTC P04C4 causes

Common causes of the DTC P04C4 fault code on a BMW include:

• Defective Fuel Fill Door Lock Position Sensor/Switch
• Wiring or connector issues in the sensor circuit
• Corrosion or damage to the sensor components

BMW DTC P04C4 seriousness

While the DTC P04C4 code may not directly affect the drivability of the vehicle, it is still important to address this issue promptly. Ignoring this fault code can lead to potential issues with the fuel fill door operation and may cause inconvenience to the driver.

How to diagnose DTC P04C4 on BMW

To diagnose the DTC P04C4 code on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
2. Inspect the Fuel Fill Door Lock Position Sensor/Switch for any visible damage or corrosion
3. Check the wiring and connectors associated with the sensor for any issues
4. Perform a functional test of the sensor to determine if it is operating correctly

How to fix DTC P04C4 on BMW

To fix the DTC P04C4 fault code on a BMW, the following steps may be taken:

1. Replace the faulty Fuel Fill Door Lock Position Sensor/Switch
2. Repair any damaged wiring or connectors in the sensor circuit
3. Clean or replace any corroded sensor components
4. Clear the fault codes using a diagnostic scanner after the repairs have been completed

How to erase DTC P04C4 on BMW

To erase the DTC P04C4 fault code on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Access the scanner’s menu to clear the fault codes stored in the vehicle’s computer
3. Follow the on-screen prompts to erase the DTC P04C4 code
4. Once the code has been cleared, perform a test drive to ensure the issue has been resolved

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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