P1407 – BMW DTC

BMW DTC P1407 – Fuel Level Signal 1

DTC P1407 meaning on BMW

The DTC P1407 on a BMW indicates a fault with the Fuel Level Signal 1. This diagnostic trouble code is triggered when the engine control module (ECM) detects a discrepancy or irregularity in the signal related to the fuel level sensor.

BMW DTC P1407 symptoms

Symptoms of a DTC P1407 on a BMW may include:

• Inaccurate fuel gauge readings
• Fluctuating fuel gauge readings
• Fuel gauge stuck on empty or full
• Check Engine Light (CEL) illuminated

BMW DTC P1407 causes

Common causes of a DTC P1407 on a BMW include:

• Defective fuel level sensor
• Wiring or connector issues in the fuel level sensor circuit
• Corrosion or damage to the fuel level sensor
• ECM software or hardware problems

BMW DTC P1407 seriousness

While a DTC P1407 may not directly affect the drivability of the vehicle, it can lead to inaccurate fuel level readings, potentially causing inconvenience to the driver. It is advisable to address this issue promptly to ensure proper monitoring of fuel levels.

How to diagnose DTC P1407 on BMW

To diagnose a DTC P1407 on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the fuel level sensor and its wiring for any visible damage or corrosion
3. Test the fuel level sensor’s resistance and voltage output
4. Check for any ECM software updates or reprogramming requirements

How to fix DTC P1407 on BMW

To fix a DTC P1407 on a BMW, the following steps may be taken:

1. Replace the faulty fuel level sensor if it is determined to be the cause
2. Repair or replace any damaged wiring or connectors in the fuel level sensor circuit
3. Clean or replace the fuel level sensor if corrosion is present
4. Perform any necessary ECM software updates or repairs

How to erase DTC P1407 on BMW

To erase a DTC P1407 on a BMW, the fault code can be cleared using a diagnostic scanner. After addressing the underlying issue causing the fault code, the ECM can be reset to clear the code and turn off the Check Engine Light.

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.