I was just on my way home, I goosed the gas a little and the check engine light came on. Also, it threw a P1416 (current). I know that it means P1416 AIR System Bank 2 but what the heck is that? Any ideas? Thanks a bunch!!! :)

 

Bump!! Anyone?? Anyone? :)

 

Circuit Discription:
An AIR pump is used on this vehicle to lower tail pipe emissions on start-up. The 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 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.

Conditions for Running the DTC:
-The engine is running for more than 30 seconds.
-The max air flow is 22 g/s
-The air/fuel ratio is 13.125:1
-The engine load is less than 40%
-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 temp is between 14 F and 230 F degrees.
-The intake air temp is between 14 F and 212 F.
-The fuel system is operating in fuel trim cells 1, 2, 3, 5, or 6.

Conditions for Setting the DTC:
The HO2S voltage does not go below 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 MIL is turned on
-A DTC is stored in memory
-The Freeze Frame/Failure records are stored
-The Failure Records are updated after the first failure of each ignition cycle

Conditions for Clearing the MIL/DTC
-The control module turns OFF the malfunction indicator lamp (MIL) after the third consecutive trip the diagnostic has run and passed.
-The history DTC will clear if the fault conditions have not been detected for 40 warm-up cycles
-A scan tool can be used to clear DTC information

Diagnostic Aids
-Remove any debris from the powertrain control module/throttle actuator control module (PCM/TAC) connector surfaces before servicing the PCM/TAC module. Inspect the PCM/TAC module connector gaskets when diagnosing or replacing modules. Verify that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM/TAC modules.
-For any test that requires probing the PCM or probing a component harness connector, use the connector test adapter kit J 35616-A. Using this kit prevents damage to the harness or component terminals.
-Carbon build-up in the exhaust manifold may restrict the amount air flow necessary to affect the HO2S voltage. If ou suspect this condition, remove the air pipe from the manifold and inspect the passage.

Test Description
-A check valve that flows in both directions causes heat damage to the AIR system components

 

RskyBns,

You're the coolest. Thanks for the info. Near as I can tell, this means that something went funky with the mixture for a second, right? Is the malfunction indicator lamp (MIL) the "check engine light? If so, since the code has been set as history, shouldn't the MIL go out soon? Thanks to everyone that can offer help for my baby here. Thanks again RskyBns!!!

:) :) :)

 

No problem man....glad I could help. :cheers:

A couple other things I'd try....

1. If you have a Scan tool, I'd use that and see what it comes up with.
2. Inspect all hoses and pipes for:
- Being Connected
- Secure Clamps are on the pipes and the hoses
- No kinks, holes, or pinched hoses/pipes
- Components with evidence of heat damage
3. If still occuring...Replace the applicable check valve, in your case " Secondary Air Injection (AIR) Check Valve/Pipe Replacement - Bank 2

:hat