P2418 – BMW DTC

BMW DTC P2418 – EVAP System Switching Valve Control Circuit/Open

DTC P2418 meaning on BMW

DTC P2418 on a BMW indicates a fault with the EVAP (Evaporative Emission Control) System Switching Valve Control Circuit. This fault code is triggered when the Engine Control Module (ECM) detects an open circuit or a lack of communication in the control circuit of the EVAP system’s switching valve.

BMW DTC P2418 symptoms

Symptoms of DTC P2418 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Decreased fuel efficiency
• Strong fuel odor near the vehicle
• Issues with passing emissions tests

BMW DTC P2418 causes

The common causes of DTC P2418 on a BMW include:

• Faulty EVAP system switching valve
• Open or short circuit in the wiring of the switching valve control circuit
• Corrosion or poor connections in the wiring harness
• Defective Engine Control Module (ECM)

BMW DTC P2418 seriousness

While DTC P2418 may not cause immediate drivability issues, it is important to address this fault code promptly. Ignoring this fault can lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the vehicle’s emission control system.

How to diagnose DTC P2418 on BMW

To diagnose DTC P2418 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the EVAP system switching valve and its wiring for any visible damage or corrosion
3. Check the continuity of the control circuit using a multimeter
4. Test the switching valve for proper operation
5. Inspect the ECM for any signs of damage or malfunction

How to fix DTC P2418 on BMW

To fix DTC P2418 on a BMW, the following steps may be taken:

1. Replace the faulty EVAP system switching valve
2. Repair any open or short circuits in the wiring harness
3. Clean or repair any corroded connectors in the circuit
4. If necessary, replace the Engine Control Module (ECM)

How to erase DTC P2418 on BMW

To erase DTC P2418 on a BMW, the fault code can be cleared using a diagnostic scanner. After the necessary repairs have been made to address the underlying issue, the code can be cleared to reset the Check Engine Light and ensure that the fault does not reoccur.

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.