P1416 code...replaced one side?
Thread Starter
TECH Enthusiast
Joined: Jan 2007
Posts: 732
Likes: 0
From: OHIO
P1416 code...replaced one side? My 98 Z28 shot out a P1416 SES light. After using our SEARCH function here I found the most common issue is the passenger side Air pump check valve off the exhaust manifold. I haven't had to deal with any of this on my SS since a;; the **** is gone 
Anyway...I replaced the left side check valve with a unit from Advanced Auto Part. The part number is CV8 made by BWD Automotive for $16.59. I haven't reset the PCM for the SES light yet; so I don't know if this fixed it. The original valve wasn't completely blocked, I could blow air through it but not as easily as the new one. Advanced only had 1 in stock so I'm having Autozone get me another one from their warehouse for the driver side; it'll be here this evening.
I figure as easy as they are to replace I'm doing them both.
I will be resetting the PCM this evening too, using this procedure:
Turn key on, don't start car
Pull PCM BATT and PCM IGN fuses in engine compartment
Wait 5-10 min
Turn ignition off
Replace fuses
Haven't had to reset my PCM ever, will this work?
Anyway...I replaced the left side check valve with a unit from Advanced Auto Part. The part number is CV8 made by BWD Automotive for $16.59. I haven't reset the PCM for the SES light yet; so I don't know if this fixed it. The original valve wasn't completely blocked, I could blow air through it but not as easily as the new one. Advanced only had 1 in stock so I'm having Autozone get me another one from their warehouse for the driver side; it'll be here this evening. I figure as easy as they are to replace I'm doing them both.
I will be resetting the PCM this evening too, using this procedure:
Turn key on, don't start car
Pull PCM BATT and PCM IGN fuses in engine compartment
Wait 5-10 min
Turn ignition off
Replace fuses
Haven't had to reset my PCM ever, will this work?
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
That'll reset the PCM, but also all the readiness tests and idle will have to relearn. Just for P1416 I wouldn't bother resetting it, after 3 cycles and the air test is run it'll turn off by itself. Won't hurt to drive with it.
Thread Starter
TECH Enthusiast
Joined: Jan 2007
Posts: 732
Likes: 0
From: OHIO
Ok...installed the other side from Autozone made by Sorensen part # 779-2929 $10.99. Just for the hell of it I reset the PCM and so far so good. I drove it a bit and no SES. I'll keep you all updated if this fixes it. At least the part numbers are posted.
