545i Increased emissions P0492
#1
New Members
Thread Starter
Join Date: Mar 2015
Location: Vegas
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: '04 545i (auto) sport pkg
545i Increased emissions P0492
Hey guys I'm new to the forum. I have an 04 545i with about 126,000 miles. I've had the P0492 error code for about a year now. I bought the car from a private dealership and they supposedly fixed it so I could pass smog. I passed smog, but a week later it came back on, and now a year later I still have the problem. I used seafoam to try and clear up what ever is clogging it. That worked for a week and came back on again. I'm running out of options since the shops I've been to want to charge ridiculous amounts of money. I've read that B-12 might work, and I'm looking in to buying the secondary air cleaner kit from AGA. My registration is up next month so anyone that can help me or give feedback I'd greatly appreciate it ASAP, thanks.
#2
New Members
Join Date: Jun 2014
Location: Ky
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 05 545i
Remove your cabin air filters and check all vacuum lines connections at the rear of engine vonnected to the secondary air valves... the get old and brittle like all rubber on all bmw... then make sure all ccv lines and valves are in good shape... this is a good place to start without taking everything apart
#3
Members
Senior Members
Join Date: May 2012
Location: Tampa Bay, FL
Posts: 2,539
Likes: 0
Received 10 Likes
on
6 Posts
My Ride: 530i
Model Year: 2004
Engine: M54
Hey guys I'm new to the forum. I have an 04 545i with about 126,000 miles. I've had the P0492 error code for about a year now. I bought the car from a private dealership and they supposedly fixed it so I could pass smog. I passed smog, but a week later it came back on, and now a year later I still have the problem. I used seafoam to try and clear up what ever is clogging it. That worked for a week and came back on again. I'm running out of options since the shops I've been to want to charge ridiculous amounts of money. I've read that B-12 might work, and I'm looking in to buying the secondary air cleaner kit from AGA. My registration is up next month so anyone that can help me or give feedback I'd greatly appreciate it ASAP, thanks.
Thread
Thread Starter
Forum
Replies
Last Post