Help with P1416 Code
Thread Starter
Pro
Joined: Jun 2004
Posts: 656
Likes: 5
From: Wright City MO
Help with P1416 Code
After a prolonged period of idling with the heater/defroster on full blast I got a P1416 (Air System Bank 2)code.
After resetting the climate control system to auto the system continued to blow hot air and wouldn't go into the cool mode; just hot and recirculating as it wouldn't stay in the mode that brings air in from outside.
Seems I remember a post here some time ago about a valve sticking in the air tube system and there was a simple fix for it using carb cleaner and/or WD40.
Once I cleared the code the climate control system started working normally and so far no code.
Has anyone else had this and ideas for the P1416 code.
Thanks,
After resetting the climate control system to auto the system continued to blow hot air and wouldn't go into the cool mode; just hot and recirculating as it wouldn't stay in the mode that brings air in from outside.
Seems I remember a post here some time ago about a valve sticking in the air tube system and there was a simple fix for it using carb cleaner and/or WD40.
Once I cleared the code the climate control system started working normally and so far no code.
Has anyone else had this and ideas for the P1416 code.
Thanks,
Last edited by Slider-01; Mar 17, 2010 at 01:53 PM.
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Go here and read. The best of the best tells you how to deal with this one.
http://forums.corvetteforum.com/c5-t...eck-valve.html
Bill Curlee is the man of experience there.
(sorry had to fix the link)
http://forums.corvetteforum.com/c5-t...eck-valve.html
Bill Curlee is the man of experience there.
(sorry had to fix the link)
Last edited by Jet-Jock; Mar 17, 2010 at 10:47 PM.
Thread Starter
Pro
Joined: Jun 2004
Posts: 656
Likes: 5
From: Wright City MO
Go here and read. The best of the best tells you how to deal with this one.
http://forums.corvetteforum.com/c5-t...eck-valve.html
Bill Curlee is the man of experience there.
(sorry had to fix the link)
http://forums.corvetteforum.com/c5-t...eck-valve.html
Bill Curlee is the man of experience there.
(sorry had to fix the link)
Bob
Racer
Joined: Mar 2005
Posts: 431
Likes: 0
From: Palatine IL
An AIR pump is used on this vehicle to lower tail pipe emissions on start-up. The powertrain control module (PCM) supplies a ground to the AIR pump relay, which energizes the AIR pump.
The PCM monitors the heated oxygen (HO2S) sensor voltages in order to diagnose the AIR system.
During the AIR test the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and the short-term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low, and the short term fuel trim should go high.
If the PCM determines that the HO2S voltages for both banks did not respond as expected during the tests, DTC P0410 sets. If only 1 sensor responded, the PCM sets either a DTC P1415 for bank 1 or P1416 for bank 2 in order to indicate on which bank the AIR system is inoperative.
The PCM monitors the heated oxygen (HO2S) sensor voltages in order to diagnose the AIR system.
During the AIR test the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and the short-term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low, and the short term fuel trim should go high.
If the PCM determines that the HO2S voltages for both banks did not respond as expected during the tests, DTC P0410 sets. If only 1 sensor responded, the PCM sets either a DTC P1415 for bank 1 or P1416 for bank 2 in order to indicate on which bank the AIR system is inoperative.
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
WD-40 is a temporary fix at best. Remember that petroleum-based liquids can damage the catalytic converters.
The dealership charges approx. $450 to replace the valve and intake manifold gaskets. Often, they will recommend replacing the knock sensors as well, since they are located in the same area.
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
It is not the PCV valve; it is a smog pump check valve that is located behind the intake manifold. In most cases, the intake manifold is removed to gain access.
WD-40 is a temporary fix at best. Remember that petroleum-based liquids can damage the catalytic converters.
The dealership charges approx. $450 to replace the valve and intake manifold gaskets. Often, they will recommend replacing the knock sensors as well, since they are located in the same area.
WD-40 is a temporary fix at best. Remember that petroleum-based liquids can damage the catalytic converters.
The dealership charges approx. $450 to replace the valve and intake manifold gaskets. Often, they will recommend replacing the knock sensors as well, since they are located in the same area.
