It will crank over but wont start?

2004 VOLKSWAGEN PASSAT
150,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
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JOSHMODE2
It will crank over but wont start its giving me a P0685 code I replaced all fuses i found the fuel pump relay bad bought a new one and it still did not start i checked if it was getting fire it was not getting fire i dont know what to do can someone please help me thank you
Aug 5, 2025 at 6:24 AM
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STRAILER
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Okay, this code is the clue, we need to check the engine computer fuses and if they are okay change out the relay.

P0685 - ECM/PCM Power Relay Control Circuit/Open

Here is a guide to help you check the fuses, be sure the key is on before testing.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the images (below). Let us know how it goes
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Aug 5, 2025 at 10:21 AM
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JOSHMODE2
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I replaced all fuses with new but i dont know where all the relays are i know where some are but i dont have diagram for what they are because i dont have a owners manual or anything
Aug 5, 2025 at 11:23 AM
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JOSHMODE2
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Ken i cant find where that panel is on my car i cant find it
Aug 5, 2025 at 12:19 PM
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STRAILER
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The relay panel and 13-position auxiliary relay panel are located in the driver side footwell, behind the lower instrument panel trim. The 8-position auxiliary relay panel is located just behind the relay panel and 13-position auxiliary relay panel.
Aug 5, 2025 at 12:50 PM
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JOSHMODE2
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Can you send me a picture of the relays and what they run like the ignition coils and stuff like that cuz I don't know what relay runs the ignition coils cuz they are not firing
Aug 5, 2025 at 1:12 PM
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STRAILER
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I can help you but we only handle one problem per thread, please post your new question here, you must be logged in. Lead with "ignition coils are not firing"

https://www.2carpros.com/questions/new

Cheers, Ken
Aug 5, 2025 at 2:46 PM
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