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P0491 Diagnostic Trouble Code Discussion for August 2013

Secondary AIR System Insufficient Flow Detected (Bank 1)


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Trouble Ticket Help Requests for DTC P0491
Help Request Posted
2003 BMW 325i 2.5L MIL Lamp on VIN: WBAEN33453
P0491: air injection flow. ... codes p0491-p0492.air injection problem.vehicle came in 2 months ago new purchase.main hose rotted.replace per customer request and reset.have checked air pump operation normal and pased 3 days with very strong pressure.vac hose to valave was broken at bac...
August 02, 2013
2003 BMW 325i 2.5L MIL Lamp on VIN: WBAEN33453
P0491: air injection flow. ... codes p0491-p0492.air injection problem.vehicle came in 2 months ago new purchase.main hose rotted.replace per customer request and reset.have checked air pump operation normal and pased 3 days with very strong pressure.vac hose to valave was broken at bac...
August 02, 2013