P3400, P3497 Honda trouble codes

Diagnose and fix P3400, P3497 Honda codes

Honda has issued a service bulletin #11-033 to address excessive oil consumption and P3400, P3497 Honda trouble codes on the vehicles listed below.

2008–10 Accord V6 A/T – ALL

2011 Accord 2-Door V6 A/T –From VIN 1HGC…..BA000001 thru 1HGC…..BA005807

2011 Accord 4-Door V6 A/T –From VIN 1HGC…..BA000001 thru 1HGC…..BA016920 ALL VINs beginning with 5KB

2010 Accord Crosstour – ALL

2011 Accord Crosstour 2WD – From VIN 5J6TF1H5.BL000001 thru 5J6TF1H5.BL001637

2011 Accord Crosstour 4WD – From VIN 5J6TF2H5.BL000001 thru 5J6TF2H5.BL003256

2008–10 Odyssey EX-L, Touring – ALL

2011 Odyssey – From VIN 5FNRL5H..BB000001 thru 5FNRL5H..BB061689

2009–10 Pilot – ALL

2011 Pilot 2WD – From VIN 5FNYF3H..BB000001 thru 5FNYF3H..BB045679

2011 Pilot 4WD – From VIN 5FNYF4H..BB000001 thru 5FNYF4H..BB080529

On these vehicles you may notice the excessive oil consumption and a check engine light that comes on during light acceleration, accompanied by either of the following trouble codes:

P3400 VPS Stuck Off Bank 1

P3497 VPS Stuck Off Bank 2

How Honda Variable Cylinder Management works

The problem is caused by the variable cylinder management system switching on and off during light throttle conditions, at cruising speeds, or when driving on flat roads. The constant switching causes excessive oil consumption and the trouble codes appear when oil pressure drops to the point where it can no longer operate the VCM system.

If you own one of these vehicles and experience the symptoms mentioned above, the fix is a software update. Do that first before you replace any parts.

©, 2016 Rick Muscoplat