What Is The Probable Cause Of An Engine Diagnostic Code P0410 On A 2001 Chevy Blazer?
My 2001 Chevy blazer keeps throwing a check engine light with a trouble code of P0410 (secondary nouns injection system). What part could be causing this code?
Answer:
What does that mean?
The P0410 code refers to the emission system. The AIR pump puts air to the exhaust to lower emissions. It takes surrounded by outside air and pumps it through two one-way check valves into each dune of the exhaust.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow hose (which occurs naturally in the exhaust) spinal column into the pump. In any cold climate, especially in climates with higher humidity, this hose down may be more excessive. The water partially fills the AIR pump, it can afterwards freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.
Symptoms
Possibly symptoms include:
MIL illumination obviously
Hesitation on acceleration
Noise from a bad/stuck AIR pump
Causes
A code P0410 may aim that one or more of the following has happened:
Water may have collected contained by the AIR pump or the vent solenoid and frozen or corroded the pump
Blown AIR pump fuse due to freezing up
Possible Solutions
Note: There is a technical service bulletin (TSB) regarding this code for a number of GM models. The TSB call for the replacement of the AIR pump and the installation of a new secondary injection hose. The TSB can be found on this ACDelco site.
Additionally, if you simply replace the AIR pump the problem may return again (and again). If you replace the pump, also clean out the hoses and replace the one-way check stopcock. If this is on a GM model that the TSB applies to, follow those instructions in the link above. In a few cases, people hold put a small hole in the rubber cover on the pump which allows any water to drain out.
Also, please note that this may be covered lower than the emissions warranty on the vehicle. If your vehicle is out of bumper-to-bumper warranty, check if the emissions warranty is still valid!
Replace the AIR pump AND one-way check valve
Test and verbs the AIR pump AND test and replace the one-way air check valve
Replace the AIR pump inlet hose
Replace the AIR pump fuse (found underneath the hood)
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Answer:
What does that mean?
The P0410 code refers to the emission system. The AIR pump puts air to the exhaust to lower emissions. It takes surrounded by outside air and pumps it through two one-way check valves into each dune of the exhaust.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow hose (which occurs naturally in the exhaust) spinal column into the pump. In any cold climate, especially in climates with higher humidity, this hose down may be more excessive. The water partially fills the AIR pump, it can afterwards freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.
Symptoms
Possibly symptoms include:
MIL illumination obviously
Hesitation on acceleration
Noise from a bad/stuck AIR pump
Causes
A code P0410 may aim that one or more of the following has happened:
Water may have collected contained by the AIR pump or the vent solenoid and frozen or corroded the pump
Blown AIR pump fuse due to freezing up
Possible Solutions
Note: There is a technical service bulletin (TSB) regarding this code for a number of GM models. The TSB call for the replacement of the AIR pump and the installation of a new secondary injection hose. The TSB can be found on this ACDelco site.
Additionally, if you simply replace the AIR pump the problem may return again (and again). If you replace the pump, also clean out the hoses and replace the one-way check stopcock. If this is on a GM model that the TSB applies to, follow those instructions in the link above. In a few cases, people hold put a small hole in the rubber cover on the pump which allows any water to drain out.
Also, please note that this may be covered lower than the emissions warranty on the vehicle. If your vehicle is out of bumper-to-bumper warranty, check if the emissions warranty is still valid!
Replace the AIR pump AND one-way check valve
Test and verbs the AIR pump AND test and replace the one-way air check valve
Replace the AIR pump inlet hose
Replace the AIR pump fuse (found underneath the hood)
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I just bought a 67 ford galaxie and have checked the door, windshield and under the hood for the Vin # and own been unable to locate it. Where else could it be located at? You've checked the usual spot? I always look at...
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Check out this you tube. I also hear a new one is coming out in 2010-12 YouTube - 1958 BMW Isetta Profile - Sports Car Market Magazine
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