LS1TECH - Camaro and Firebird Forum Discussion

PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

Help With SES Light (Code P0121)

Thread Tools
 
Search this Thread
 
Old 09-06-2019, 10:44 AM
  #21  
TECH Enthusiast
iTrader: (7)
 
Blownbayou's Avatar
 
Join Date: Dec 2008
Location: South Louisiana
Posts: 653
Received 6 Likes on 4 Posts

Default
Well the light came back a few months ago (rarely drive the car)..... Traction control light as well. Turn off AC and run it and the traction control light goes back to normal.... Hope to see something else on this
Blownbayou is offline  
Reply Like
Old 09-06-2019, 03:36 PM
  #22  
TECH Resident
iTrader: (1)
 
Russ K's Avatar
 
Join Date: Apr 2006
Location: Regina, Sask
Posts: 810
Received 4 Likes on 3 Posts

Default
The P0121 code is caused by the lower low RPM vacuum when performance camshaft is installed. You need to disable the P0121 Error Max & Min Map test. Do this by setting the max to 100 KPA & the min to 0 KPA.

Russ Kemp
Russ K is offline  
Reply Like
The following 2 users liked this post by Russ K:
Blownbayou (09-09-2019), kyoytey1693 (11-10-2020)
Old 09-07-2019, 10:45 AM
  #23  
Teching In
 
Linson's Avatar
 
Join Date: Nov 2016
Location: Washington State
Posts: 11
Received 0 Likes on 0 Posts
Default
Originally Posted by Russ K
The P0121 code is caused by the lower low RPM vacuum when performance camshaft is installed. You need to disable the P0121 Error Max & Min Map test. Do this by setting the max to 100 KPA & the min to 0 KPA.

Russ Kemp
I have the same issue. This tracks with me because I have a performance cam and A/C deleted.
Linson is offline  
Reply Like
Tags
Back to Subforum
PCM Diagnostics & Tuning
View Next Unread
New build - mail order tune by Frost for break-in?




Advanced Search
Quick Reply: Help With SES Light (Code P0121)


Reply Closed Thread Share

All times are GMT -5. The time now is 08:49 AM.