Questions & Answers for: po 411

...po 411 code check engine light comes on and off over time is it a sensor or the air pump? 2006 trailblazer po 411 code check engine light comes on and off over time is it a sensor or the air pump? ...

i required rc xerox 250 machine in kolkata Corporate Office Xerox India Limited 5th & 6th Floor, Block One Vatika Business Park Sector-49, Sohna Road Gurgaon - 122018, Haryana, India Sales: ...

...po 411 promblem on a 1998 ford taurus CODE PO411 - SECONDARY AIR SYSTEM INCORRECT UPSTREAM FLOW DETECTED. POSSIBLE CAUSES, AIR PUMP OUTPUT IS BLOCKED, AIR BYPASS SOLENOID LEAKING OR BLOCKED, AIR ...

po 411 and po 420 the first code is to do with the secondary air injection optical sensor not reading correctly and i suspect it's that causing the second code which is catalytic convertor reading out

Po 411 code This is a secondary air injection problem. I don't know if yours is electrical or mechanical (belt driven), but this is a problem with the pump that delivers air into the exhaust ports ...