Notices
IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

P2420 code

Thread Tools
 
Search this Thread
 
Old Oct 25, 2025 | 11:45 AM
  #1  
Gron's Avatar
Gron
Thread Starter
8th Gear
 
Joined: Sep 2025
Posts: 8
Likes: 0
Default P2420 code

2012 is250. Car runs great just this code is active. Anyone resolve this issue and what was the fix? Thanks
Reply
Old Oct 25, 2025 | 01:29 PM
  #2  
primavera's Avatar
primavera
Racer
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2017
Posts: 1,269
Likes: 331
From: Ontario
Default

Try top tier premium gas. P2420 is usually associated with low 87 octane gas
Reply
Old Oct 26, 2025 | 11:07 AM
  #3  
Gron's Avatar
Gron
Thread Starter
8th Gear
 
Joined: Sep 2025
Posts: 8
Likes: 0
Default

Thanks for the reply.
I only use 93 octane gas.
Reply
Old Oct 26, 2025 | 11:11 AM
  #4  
Gron's Avatar
Gron
Thread Starter
8th Gear
 
Joined: Sep 2025
Posts: 8
Likes: 0
Default

If clear the code drive for 40 miles no code. Car sits overnight. I’ll check for codes and there will be a code for p2420. So it’s happening overnight when the vehicle runs its evap check.
Reply
Old Nov 25, 2025 | 04:13 AM
  #5  
Gron's Avatar
Gron
Thread Starter
8th Gear
 
Joined: Sep 2025
Posts: 8
Likes: 0
Default Resolved

Even though I replaced the gas cap I stopped once I heard the click. That wasn’t good enough. I turned the cap a little more to put it on tighter and immediately the light went out.
Reply
Old Nov 27, 2025 | 07:34 AM
  #6  
mandyfig's Avatar
mandyfig
CL Community Team
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2007
Posts: 12,398
Likes: 455
From: GA
Default

Good catch, You need to hear no less than 4 clicks...
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Seanmurphy
ES - 1st to 6th Gen (1990-2018)
1
Dec 12, 2022 04:23 PM
seanmwple
IS - 2nd Gen (2006-2013)
10
Feb 10, 2022 04:56 AM
Ianflagg
Performance
1
Jul 24, 2020 03:36 AM
SCORP69
IS F (2008-2014)
0
Mar 7, 2019 12:04 PM




All times are GMT -7. The time now is 06:15 PM.