why code descriptions different???

**IZNUTHN** · 12-18-2005, 11:42 PM

I noticed the SES light on and lucky for me I was on my way to Autozone. I scan it and code P1416 pops up. I just check the DTC and they are completely different from eachother. On the scanner it said Mfctr auxilary emissions control but in the room here it. what do i do now? Can my O2 sensors or fuel injection cause these prob lems.

**2001NBMZ28** · 12-19-2005, 07:01 AM

Depending on the scanner the descriptions can be a little different - go by the DTC code. See www.ls1.com/forums/showthread.php?t=1373 Also check to make sure the hose/gasket in the metal pipe where it connects to the header aren't leaking.

**IZNUTHN** · 12-19-2005, 08:28 AM

which hose hose are you talking about?? well, i just put that bypass kit on. do you think that also could of caused the code.

**2001NBMZ28** · 12-19-2005, 08:48 AM

The air check valve screws into the metal pipe on the air tube, the other end is connected with a hose and clamp. What bypass kit did you put on?

**IZNUTHN** · 12-19-2005, 09:06 AM

under the throttle body....

**2001NBMZ28** · 12-19-2005, 09:20 AM

Nah, TB bypass shouldn't throw P1416 - might get a different code(s) if you didn't plug the sensors back in though.

**IZNUTHN** · 12-19-2005, 09:51 AM

yeah, the p1416 code description said manufacturers emissions auxilary controls

**2001NBMZ28** · 12-19-2005, 10:14 AM

Looking it up at obdii.com for GM it comes up as "Secondary Air Injection (AIR) System, Bank 2."

**IZNUTHN** · 12-19-2005, 10:17 AM

if i just erase the code will my car still be cool to drive??

**2001NBMZ28** · 12-19-2005, 10:30 AM

It's OK to drive with P1416. If you erase it without fixing it it'll come back on after a couple cold starts though.

**IZNUTHN** · 12-19-2005, 10:33 AM

okay, but if the code is pretty easy to fix how do i fix that again.

**2001NBMZ28** · 12-19-2005, 10:58 AM

I'd replace the passenger side air check valve - get one from your local NAPA - once it's replaced the PCM will turn the SES off after a few cold starts, but the code will be stored in "history" for a while until that clears also.