SES light keeps coming on in truck.
Need SES help
notch89
1 - 13 of 13 Posts
Thanks for writing back. Here is my problem. All the mods i have been on my truck for a while. I have the K@N aircharger,JBA headers, Custom exhaust with magnaflow x pipe , and Flowmaster Super 40s, and 2 degree timing.The problem with the SES light started after i replaced the gasket on the cat to the custom exhaust. So i took to the dealer and they said it was the upper A/f ratio meter or upper 02 on right side. I replaced it light went came back on 30miles later. So i ordered o2 simulators no help. So have any you had problems like this? Also the truck feels great even though the light is on because I beat a Silverado ss The other night from a roll.
Joined
·
17,473 Posts
You have to pull the code, it could be anything, you say you replaced the gasket on the cat. It might be leaking, it might not. Pull the code. Go into the "How to" section for instruction.notch89 said:
Joined
·
5,321 Posts
goto autozone and pull the codenotch89 said:
or you can pull the code yourself.
1)Turn key to on position
2)Wait exactly 3 seconds (count 1thounsand1, 1thousand2....)
3)Push gas pedal down and release 5 times within 5 seconds)
4)Wait exactly 7 seconds (count 1thounsand1, 1thousand2....)
5)Hold gas to floor for 10 seconds.
6)Release pedal when SES starts blinking.
7)Count flashes, there is a slight pause in between digits
10 flashes equal 0
Example
10flashes = 0
pause
1 flash = 1
pause
7 flashes = 7
pause
2 flashes = 2
The code is P0172
The lights will continue to flash the sequence.
If you want to reset the ECU which will remove the SES light, hold the accelerator for at least 10 seconds. Turn off the ignition after 10 seconds. The ECU should be reset and the SES light should be gone.
Joined
·
2,477 Posts
Noch check your exhaust for leaks. Have a Consult2 or Cipher diagnose the issue looking for fuel of 102-106% normal. Also have the AF checked looking at voltage should be 1.5volts at 2Krpm.notch89 said:
Or have the dealer fix it. I have had 2 -A/F, 1 - O2, 1- MAF and one cat replaced already. All under 36K warranty. No issues since I'm at 45K+.
1 - 13 of 13 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
