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Old 10-09-2017, 09:25 AM   #1
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Actually...

p0410 SAI system, bank 1 below limit
p1411 SAI system, bank 2 below limit

This could be anything in the SAI system. Start with verifying that the air pump is turning on during cold starts. Next, check the changeover valve since it's easy to get to. After that, I'd check for vacuum leaks. Moving down the line, check the electronic changeover valve and check valve (alternator must be removed to get to them - depending on the year of your car, you may have a combination valve that has both the changeover and check valve in one unit).
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Old 10-09-2017, 09:47 AM   #2
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Quote:
Originally Posted by particlewave View Post
Actually...

p0410 SAI system, bank 1 below limit
p1411 SAI system, bank 2 below limit

This could be anything in the SAI system. Start with verifying that the air pump is turning on during cold starts. Next, check the changeover valve since it's easy to get to. After that, I'd check for vacuum leaks. Moving down the line, check the electronic changeover valve and check valve (alternator must be removed to get to them - depending on the year of your car, you may have a combination valve that has both the changeover and check valve in one unit).
ACTUALLY: Taken directly from the OBD II manual for the car, Page 410-2

"P0410 Secondary Air Injection signal implausible, cylinders 1-3 Fault condition: Secondary air injection pump is not triggered"

"P1411 Secondary Air Injection signal implausible, cylinders 4-6 Fault condition: Secondary air pump does not work"
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Last edited by JFP in PA; 10-09-2017 at 09:54 AM.
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