Jump to content
edd_jedi

Error Code 3F57 (boost pressure plate)

Recommended Posts

I check my cars fault codes this morning and a new one has come up, 3F57. I've Googled it and most people seem to be reporting power loss or even limp mode. As far as I can tell, the car seems to be driving fine. Can anyone advise what this might be and what I should check please?

Share this post


Link to post
Share on other sites

That code suggests the MAP sensor on the intake manifold. Could be the vacuum pipe has perished or is damaged in some way. This post shows the information on the MAP

 

 

Share this post


Link to post
Share on other sites

This code has just returned again after going away for a while. A bit of Googling is bringing up posts about turbo actuators, any more experience with this from anyone please?

Share this post


Link to post
Share on other sites

You're spot on Changy - with my 3F57, engine flat no turbo boost.

The thing is 4 months ago I had "increased emisson fault" (code 4501) problem .

I had replaced / tested just about everything I could find related to that  problem.

I bought 3 cheap MAP sensors off the net (all u/s) to hopefully remedy, waste of time.

 

So I bought a "genuine BMW Map sensor (£71) from local Main Dealer.

It didn't fix my problem , but left it in the manifold anyway,  solved it eventually with leaking seal at intercooler inlet pipe.

Anyway I'm lucky I kept the old Map sensor as I had recently had the 3F57 code with the same

no turbo power, engine flat (same as the cheap sensors I had tried)

The genuine BMW sensor only lasted 1,500 miles.

 

You live and learn.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×