So I just finished my first carbon clean, got everything put back together. I also replaced the air filter, cabin air filter, spark plugs, and did an oil change. The car had been sitting for months, the battery was dead. I charged the battery and she started up immediately, no codes (I guess due to battery being dead). That was about 1 week ago, since then I’m getting the following code:
001169 - Secondary Air Injection System: Bank 1
P0491 - 002 - Insufficient Flow - MIL ON
Freeze Frame:
Fault Status: 11100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 65482 km
Time Indication: 0
Freeze Frame:
RPM: 1149 /min
Load: 47.8 %
Speed: 14.0 km/h
Temperature: 28.0°C
Temperature: 21.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.208 V
I’ve cleared it twice and its come back. So this weekend I will try and look into this, so I’m here looking for advice as to what I might look for? Insufficient flow, does that imply a leak? blockage? something else? Any suggestions as to where I should start?
Also, based on my research, the SAI system appears to be a mostly useless system. So removing it altogether might also be an option?
I’m wondering as well, if the check engine light is on (as it is when I get this code) is the engine/ECU in some sort of safe mode? ie even if this is a non critical system, will performance be affected if this code is up?
Thanks