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Discussion Starter · #1 ·
Hello all.
I have a 21 700SE showing a 51 code (5 long, 1 short Flash) which by the book says bad fan relay. Only 9 hours on the machine…

i have ordered a new relay even though the relay seems to be functioning. My question is how do I shut the check engine light off? I tried ordering a generic scanner with a 3 pin connector- this didn’t sync to the system. Disconnecting the battery doesn’t do it, disconnecting the ecu doesn’t work either. Is there a specific scan tool I can buy?

also, I found a post on here with someone selling one- that turned into another person private messaging me trying to scam me for money. Be careful as it seems scammers are lurking this forum
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