Check engine light goes on and off for code P1415 or P1416
Thread Starter
2nd Gear
Joined: Dec 2009
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Check engine light goes on and off for code P1415 or P1416
I have a 2003 Corvette coupe and my check engine light keeps going on and off for an air pump problem, but I know my air pump is working fine. I was told that the air lines could have a crack in it. Where would be the spot that I could find that?
Advanced
Joined: Jun 2009
Posts: 64
Likes: 0
From: Portage Indiana
What you have are sticking check valves in the AIR System. There are two such valves, one for each cylinder bank, and yes the one that stcks the most is the hard one to get to. Several folks have been able to cure the problem by disconnecting the AIR line where it runs down the driver's side of the enginw and spray WD40 or carbuator cleaner into the hose leading to the manifolds. This has been known to free up the check valves. Obviously the only real cure is to replace for about $35.00 each.
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
1. Check the filtered air supply INLET hose to the A.I.R. pump for kinks or obstructions. It runs from the engine air filter box to the electric A.I.R. pump.
2. Check the electric solenoid valve on the OUTPUT side of the A.I.R. pump. If not fully open, air to both check valves will be low.
Tech Contributor
Joined: Oct 1999
Posts: 41,042
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From: Charlotte, NC (formerly Endicott, NY)
What you asked for:
DTC P1415 or P1416
Circuit Description
The secondary air injection (AIR) pump system is designed to lower exhaust emission levels after a start up. The AIR pump is timed to remain ON for approximately 1 minute after the engine is started.
The powertrain control module (PCM) commands the AIR pump relay ON by supplying a ground to the AIR pump relay control circuit. This action energizes the AIR pump, forcing fresh air into the exhaust stream. The PCM also commands the AIR vacuum control solenoid ON which applies engine vacuum to the AIR shut-off valve. With vacuum applied to the AIR shut-off valve, airflow from the AIR pump flows through the pipes/hoses to the exhaust check valves, then enters into the exhaust stream. The air, oxygen, that is introduced into the exhaust system accelerates catalyst operation. When inactive, the check valves and the shut-off valve prevent air flow in either direction.
The PCM detects a system air flow condition by monitoring the heated oxygen sensors (HO2S) and Short Term Fuel Trim during normal Open Loop AIR system operation. This is called a passive test. If the passive test indicates a pass, the PCM takes no further action. If the passive test fails or is inconclusive, the diagnostic will proceed with an intrusive or active test. The PCM will command the AIR system ON during Closed Loop operation under normal operating conditions. The active test will pass or fail based on the response from the HO2S. A lean HO2S response indicates that the AIR system is functioning normally. An increasing Short Term Fuel Trim value also indicates a normal functioning system. The AIR diagnostic consists of the passive test and the active tests. The AIR diagnostic requires failure of the passive and active tests on 2 consecutive key cycles to illuminate the malfunction indicator lamp (MIL) and stores a DTC. If the PCM detects that the HO2S and Short Term Fuel Trim did not respond as expected on one of the engine banks, DTC P1415 or P1416 sets.
Conditions for Running the DTC
· DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0125, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0151, P0154, P0155, P0157, P0158, P0160, P0161, P0171, P0172, P0174, P0175, P0200, P0300, P0335, P0336, P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358, P0440, P0442, P0443, P0446, P0449, P1120, P1133, P1134, P1153, P1154, P1220, P1221, P1258, P1441 are not set.
· The engine is running for more than 30 seconds.
· The mass air flow (MAF) is less than 23 g/s.
· The air/fuel ratio is 14.7:1.
· The engine load is less than 40 percent.
· The ignition voltage is more than 11.7 volts.
· The engine is not operating in the Power Enrichment, the Decel Fuel Shut-off, or the Catalyst Over-Temperature Modes.
· The engine speed is more than 850 RPM.
· The engine coolant temperature (ECT) is between -10 and +110°C (14-230°F) .
· The intake air temperature (IAT) is between -10 and +100°C (14-212°F) .
· The fuel system is operating in fuel trim cells 1, 2, 4, 5, or 6.
Conditions for Setting the DTC
The HO2S voltage does not decrease to less than 222 mV for 1.3 seconds.
OR
The short-term fuel trim does not change more than a predetermined value.
Action Taken When the DTC Sets
· The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
Bill
DTC P1415 or P1416
Circuit Description
The secondary air injection (AIR) pump system is designed to lower exhaust emission levels after a start up. The AIR pump is timed to remain ON for approximately 1 minute after the engine is started.
The powertrain control module (PCM) commands the AIR pump relay ON by supplying a ground to the AIR pump relay control circuit. This action energizes the AIR pump, forcing fresh air into the exhaust stream. The PCM also commands the AIR vacuum control solenoid ON which applies engine vacuum to the AIR shut-off valve. With vacuum applied to the AIR shut-off valve, airflow from the AIR pump flows through the pipes/hoses to the exhaust check valves, then enters into the exhaust stream. The air, oxygen, that is introduced into the exhaust system accelerates catalyst operation. When inactive, the check valves and the shut-off valve prevent air flow in either direction.
The PCM detects a system air flow condition by monitoring the heated oxygen sensors (HO2S) and Short Term Fuel Trim during normal Open Loop AIR system operation. This is called a passive test. If the passive test indicates a pass, the PCM takes no further action. If the passive test fails or is inconclusive, the diagnostic will proceed with an intrusive or active test. The PCM will command the AIR system ON during Closed Loop operation under normal operating conditions. The active test will pass or fail based on the response from the HO2S. A lean HO2S response indicates that the AIR system is functioning normally. An increasing Short Term Fuel Trim value also indicates a normal functioning system. The AIR diagnostic consists of the passive test and the active tests. The AIR diagnostic requires failure of the passive and active tests on 2 consecutive key cycles to illuminate the malfunction indicator lamp (MIL) and stores a DTC. If the PCM detects that the HO2S and Short Term Fuel Trim did not respond as expected on one of the engine banks, DTC P1415 or P1416 sets.
Conditions for Running the DTC
· DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0125, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0151, P0154, P0155, P0157, P0158, P0160, P0161, P0171, P0172, P0174, P0175, P0200, P0300, P0335, P0336, P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358, P0440, P0442, P0443, P0446, P0449, P1120, P1133, P1134, P1153, P1154, P1220, P1221, P1258, P1441 are not set.
· The engine is running for more than 30 seconds.
· The mass air flow (MAF) is less than 23 g/s.
· The air/fuel ratio is 14.7:1.
· The engine load is less than 40 percent.
· The ignition voltage is more than 11.7 volts.
· The engine is not operating in the Power Enrichment, the Decel Fuel Shut-off, or the Catalyst Over-Temperature Modes.
· The engine speed is more than 850 RPM.
· The engine coolant temperature (ECT) is between -10 and +110°C (14-230°F) .
· The intake air temperature (IAT) is between -10 and +100°C (14-212°F) .
· The fuel system is operating in fuel trim cells 1, 2, 4, 5, or 6.
Conditions for Setting the DTC
The HO2S voltage does not decrease to less than 222 mV for 1.3 seconds.
OR
The short-term fuel trim does not change more than a predetermined value.
Action Taken When the DTC Sets
· The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
Bill
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Air injection is used to lower HC and CO emissions, before the cats heat up, just after a cold engine start-up.
The injected air also reduces the time it takes for the cats to reach their operating temperature.
The injected air also reduces the time it takes for the cats to reach their operating temperature.
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Instructor
Joined: Feb 2007
Posts: 163
Likes: 28
From: Sweden
I had the same codes on my 2002 coupe and the check engine light as well, a new battery was the solution. No codes since the old Delco battery was replaced with a new Optima.
Hakan
Tech Contributor
Joined: Jan 2007
Posts: 19,417
Likes: 1,145
From: Dyer, IN
Sorry to burst your bubble, but if you think you solved a reoccurring P1415/1416 by replacing the battery...it will be back. If you had a weak battery(or poor connections), you would have a host of codes....least of all....for the AIR system.
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
Just had the p1415 code cause check engine light to come back on again today been to dealership three times already. I think I am going to see if i can have the p1415 and p1416 just tuned to ignore those codes .
Tech Contributor
Joined: Jan 2007
Posts: 19,417
Likes: 1,145
From: Dyer, IN
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
they changed the valves which i paid to have done then i parked my car didnt drive it for several weeks then over two day period of driving my car the check engine light came back on same problem so i took it back to dealership and the told me it was a lose hose. Over two day period i drove the car and today check engine light is back on same problem again.
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Are you sure that your dealer replaced BOTH check valves?
The P1416 code pertains specifically to the Bank 2 (right side) of the Secondary Air System.
Bill Curlee took my old check valve apart to see how they fail. He later posted this thread, with a good explanation and pics.
http://forums.corvetteforum.com/c5-t...planation.html
The P1416 code pertains specifically to the Bank 2 (right side) of the Secondary Air System.
Bill Curlee took my old check valve apart to see how they fail. He later posted this thread, with a good explanation and pics.
http://forums.corvetteforum.com/c5-t...planation.html
Last edited by Quicksilver Vert 01; May 6, 2010 at 08:55 AM. Reason: added link
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
Are you sure that your dealer replaced BOTH check valves?
The P1416 code pertains specifically to the Bank 2 (right side) of the Secondary Air System.
Bill Curlee took my old check valve apart to see how they fail. He later posted this thread, with a good explanation and pics.
http://forums.corvetteforum.com/c5-t...planation.html
The P1416 code pertains specifically to the Bank 2 (right side) of the Secondary Air System.
Bill Curlee took my old check valve apart to see how they fail. He later posted this thread, with a good explanation and pics.
http://forums.corvetteforum.com/c5-t...planation.html
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
yeap, what i plan to do is visit my tuner and get some of codes set to no read. I had kooks headers with high flow cats installed back in Nov. of last year. They did awesome job the car drives great so that is my next step.
