Thread: CEL P0456
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Old 04-23-2017, 05:46 PM   #49
Chad86
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Thanks @Enalband24
I'm struggling to determine the cause of CEL P0456 and I've noticed on occasion when my car is warm it struggles to turn over. I am thinking my issue is similar to yours in that my engine is flooding/too rich during start up. I am running the base tune from MotoEast on the Sprintex 335; I will contact MotoEast to create a revision tune.

Also, for the longest time I thought the MAPs were configured on the base tune but it ends up none of them are configured. Is this normal or do you have to have the MAPs enabled further then on say the initial base tune?

Quote:
Originally Posted by Enalband24 View Post
I know this is an old thread, but I figured I'd post up my solution to the codes I was experiencing in case anyone runs into something similar.

The P0451 code was related to the EVAP solenoid for sure. The hoses must have came loose underneath the manifold.

I ended up popping the P0069 code with the slip light shortly after my last post here back in April. Ended up just being something with the tune I was running. I switched to a tune from Bill @ Delicious Tuning and haven't had a code since.

However, I still had my startup hesitation/fail to start. Everything was pointing to flooding/too rich during start up. Well, I took some logs, sent them to Bill, he sent me an updated tune, and voila, problem solved. He never told me what it was, but I believe he tweaked the scaling for the injectors. I'm assuming the flow data I received with the injectors was incorrect.

Hope this helps someone.
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