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EVAP shut off valve stuck closed

Discussion in 'E36 (1992-1999)' started by Mike Bergin, Mar 15, 2023.

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    Mike Bergin MikeB

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    I just replaced my shut off valve due to an engine light and the code it was posting. I'm wondering if I got a bad valve or if something else could trigger this fault code. The shut off valve is a new BMW valve but I'm still getting the check engine light and the code indicates the shut off valve is stuck closed. Any ideas would be helpful. Thanks in advance.
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    I’ve been chasing random codes (including evap reed valve) on my E46 for a few months. The car doesn’t get driven much. Try testing the battery and system voltage. My battery light came on last weekend and I remembered that I had a similar experience a couple of years ago in another car. Bad battery can cause check engine light to come on. I’m not sure this is your problem, but its worth checking out.
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    There are some E36 ETM's (electrical troubleshooting manuals) here:

    Short of trying to look at wiring diagrams myself, afraid I don't have much to help for further insight. Try google searching your specific problem, sometimes it's surprising what you can find - BMW E36 shutoff valve codes (or somesuch). Hope you can trace it. Remembering now, it's an issue on 80's era bimmers, maybe not so much for the more 'electroniced' OBDII & later cars, but circuit boards could suffer cracked solder lines, I recall my old mechanic hand soldering SI boards using and eye loupe. Point being, if all the voltages check out from what's supposed to trigger it, then maybe something on a logic board (if it's a logic board for instance and not all part of some microprocessor)

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