SES light help! P1514
#1
TECH Fanatic
Thread Starter
iTrader: (8)
Join Date: Dec 2002
Location: San Jose , Yay Area
Posts: 1,234
Likes: 0
Received 0 Likes
on
0 Posts
SES light help! P1514
my truck is throwing a p1514 unknown code once it throws the code it immediately goes into reduced engine power. I went to the dealer and they told me the code is "throttle body performance" it happens everytime I start to go into boost at about 3500-3800 rpms. Does anyone know what may be causing this problem? I have fuel pressure and -ltrims when this happens.
#2
TECH Senior Member
iTrader: (1)
Join Date: Jan 2003
Location: Armpit of East TX
Posts: 9,342
Likes: 0
Received 0 Likes
on
0 Posts
Can you give us some more info? Can you put up a log file that we can look at and highlight when the code is thrown?
Off hand .. do you have a ported TB? Maybe something is up with the TPS sensor or something. What year is the truck? More specifically do you have electronic throttle or a real throttle? Did you do anything to the truck before it started throwing the code? Give us some more details to work with plz ..
Off hand .. do you have a ported TB? Maybe something is up with the TPS sensor or something. What year is the truck? More specifically do you have electronic throttle or a real throttle? Did you do anything to the truck before it started throwing the code? Give us some more details to work with plz ..
#3
TECH Fanatic
Thread Starter
iTrader: (8)
Join Date: Dec 2002
Location: San Jose , Yay Area
Posts: 1,234
Likes: 0
Received 0 Likes
on
0 Posts
the truck is a 6.0 Lq4 with my 01 5.3 pcm.. i have all the 5.3 accesories the electronic TB and its a procharger kit.... this code is thrown when i get into boost at any point....i havnt tuned it so im not beating it but every time it gets into boost it throws this code..the TB is stock, ill work on getting a log of it up. Before the code throwing started i did a 6.0/FLP 4l60 swap and put the p1sc on...
#4
TECH Resident
Join Date: Aug 2003
Location: orlando, florida
Posts: 952
Likes: 0
Received 0 Likes
on
0 Posts
PO1514 is calc. airflow vs rpm vs tps it`s in the diagnostics tab in edit. you need to multiply the whole table by 125% after that any figure that is less then 500 make that figure 500. This table needs to be adjusted in ls1s when running FI Or you`ll have the same problems you mentioned above so that means it probly need to be adjusted in the trucks to. Hope this helps.
Thread
Thread Starter
Forum
Replies
Last Post
dantheman1540
STEREO & ELECTRONICS
7
02-24-2016 09:56 PM
legerwn
Tuning, Diagnostics, Electronics, and Wiring
56
11-15-2015 10:21 PM
carid
Sponsor's Announcements, Sales, and Specials
0
10-01-2015 09:22 AM