BMW DTC P2406 – EVAP System Leak Detection Pump Sense Circuit High
DTC P2406 meaning on BMW
DTC P2406 on a BMW indicates a fault with the EVAP (Evaporative Emission Control) System Leak Detection Pump Sense Circuit. This code specifically points to a high voltage condition detected in the circuit related to the leak detection pump.
BMW DTC P2406 symptoms
Symptoms of DTC P2406 on a BMW may include:
- Check Engine Light illuminated
- Decreased fuel efficiency
- Strong fuel odor
- Issues with passing emissions tests
BMW DTC P2406 causes
Common causes of DTC P2406 on a BMW include:
- Faulty EVAP leak detection pump
- Wiring or connector issues in the circuit
- Corrosion or damage to the components
BMW DTC P2406 seriousness
While DTC P2406 may not cause immediate drivability issues, it is important to address this fault promptly. Ignoring this code can lead to increased emissions, potential fuel leaks, and may cause the vehicle to fail emissions tests.
How to diagnose DTC P2406 on BMW
To diagnose DTC P2406 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the EVAP system components for any visible damage or leaks
- Check the wiring and connectors related to the leak detection pump
- Perform a smoke test to identify any leaks in the EVAP system
How to fix DTC P2406 on BMW
To fix DTC P2406 on a BMW, the following steps may be taken:
- Replace the faulty EVAP leak detection pump
- Repair or replace any damaged wiring or connectors in the circuit
- Clean or replace components affected by corrosion
- Clear the fault code and perform a test drive to ensure the issue is resolved
How to erase DTC P2406 on BMW
To erase DTC P2406 on a BMW, follow these steps:
- Use a diagnostic scanner to clear the fault code
- After clearing the code, perform a test drive to ensure the code does not return
- If the code returns, further diagnosis and repairs may be necessary
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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