P0491 Unlocking the Power of Diagnosis for Optimal Engine Function

S-Type / S type R Supercharged V8 ( X200 ) - P0491...secondary air pump? - I just scanned my car for a CEL and came up with this code. P0491 and P0410 Codes Secondary Air Injection System ... Background on the car... 2007 Fusion w/ roughly 54k on the clock....no issues with the ... P0491. Says its the secondary air injection system. I went to my friends shop here in pittsburgh to check it then we cleared it. Car is running fine but it may ... Secondary Air Injection System Insufficient Flow Bank 1. DTC P0491, sometimes indicated as P049100, is an OBD diagnostic trouble code indicating a generic fault ... The air injection pump is failing or the fuse has blown. It's a high-current fuse (40A if I recall). For troubleshooting, I would look from the load side of ... The PCM will set the 0491/0492 codes based on what the O2 sensors see. So if there is a link then perhaps the faulty PCV valve is changing the exhaust mixture. This code comes back and I have to remove it to turn off the check engine light. I have been told I need a carbon cleaning and Audi will not honor an extended ... It's code p0491 -- Secondary air pump, bank1. From what I've read it could be the bank 1 valve and/or the hoses that run under the manifold. The car will need to be in closed loop or hot for the 02 sensors to read the air input correctly. Need to erase this codes for a 2010 Q5 3.2 FSI. Thanks in advance for your help. Attached Files .rar ...