P2404 code on 2018 subaru crosstrek

[Blake Mason]

Hello recently I got a check engine light in my subaru crosstrek, and it says its an “evaporative emission system leak detection pump sense circuit range/ performance”. Ive looked around a good bit online to try and figure it out but cant seem to find anything except for replacements or removals. I was wondering if anybody had and info on this without having to spend a ton of money on labor and parts.

Topic

[Richard Kirshy]

For a evaporative emission system leak.
Consider smoke testing the system first to locate the source.

[Dave Tidman]

I’m not sure if you have seen this, but it may help

http://www.sucross.com/dtc_p2404_evap_system_leak_detection_pump_sense_circuit_range_performance-1929.html

The code is because the ecm can’t determine if the leak detection pump is running. It is most likely the pump or the wiring between the ecm and the pump. A bidirectional scan tool would be helpful, but probably not available to you.

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