P0491 A Comprehensive Guide to Secondary Air Injection System Repair

P0491 and P0410 Codes Secondary Air Injection System ... Background on the car... 2007 Fusion w/ roughly 54k on the clock....no issues with the ... The engine to shut off randomly while driving at lower speeds and at idle...it is intermittent...but usually shuts off within 10-20 mins of driving. If these valves can't open, there won't be any flow into the engine from the secondary air injection pump and the insufficient flow codes are ... 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. I own a 2010 Bentley Supersport. here is the default code. P0491, what do you think of the secondary air circuit?? how can I identify the SAI 1 motor pump from ... Both of these codes are pointing towards a defective valve. Tests/Procedures:1. This system uses a pressure sensor to monitor secondary Air Flow from the AIR ... Cold is a relative term. The engine coolant temperature needs to be under 104F/40C otherwise the SAP pump WILL NOT be commanded on. If you have ... Get P0491 OBD-II code: Secondary air injection system insufficient flow. Know common triggers, repairs needed, and find RepairPal certified shops for ... Hello Everyone, So I'm having this issue with makes my check engine to light up every now and then outputting this error code P0491 and ... p0491 | Watch the latest videos about #p0491 on TikTok.