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Check Engine Light for Running Rough and Difficulty Starting on Honda Pilot

Problem Description and Possible Solution

The exhaust recirculation valve (EGR) on the 2003-2017 Honda Pilot may fail, causing:

  • Illumination of the check engine light
  • OBD trouble codes P0401 and P1491
  • Illumination of the "VTR-4" light
  • Rough idle
  • Reduced fuel economy
  • Engine vibrations
  • Hesitation or stalling
  • Long cranking before engine starts
  • Failure of state or federal smog tests
  • The EGR valve has open and closed positions, and opens or closes on command from the computer.

    Exhaust gases constantly pass through the valve when it is open, leaving carbon deposits on the valve. These carbon deposits may lead the the valve sticking in the open or closed position.

    To correct this issue, sometimes it is sufficient to clean the valve, but replacement is recommended in all cases.

    For further information on your vehicle's issue, try out our diagnostics tool here.

    Problem Data
    RepairPal Verified
    Average mileage: 115,118 (22,200–185,000)
    14 model years affected: 2003, 2004, 2005, 2006, more2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
    32 people reported this problem
    Comments
    Viewing 1 - 5 of 5 comments
    Check engine light came on, acceleration was degraded, took vehicle to manufacture and they verified it was a compressed EGR valve. Honda suggested it be repaired immediately the estimated cost is $300 plus dollars. We are checking for recalls on this part. Repairs have not been made yet.
    The check engine light came on, so I took the car into the dealership to diagnose the condition. The vehicle is 2-1/2 years old but, over the 36K mile threshold for manufactures warranty, but I was informed that it could be covered under the emission portion of the warranty which is 8yr/80K. We also purchased a 120K mile extended warranty purchased at the dealership. . Apparently this part is not covered under either warranty. It was roughly a $300 repair.
    Has been going on for quite a while but was originally told it was the emissions (bad catalytic converter). Car started running really rough, almost stalling out and would not start properly.