p0300, p0305, p0306 codes, but only in pending status?
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2011 GL450 VIN: 4JGBF7BE8BA706134
p0300, p0305, p0306 codes, but only in pending status?
Just purchased a 2011 GL450. Had a Pre-purchase inspection that brought up a few issues. One of these was the runner flap on the intake manifold was stuck in the open position. Worked out an arrangement with the dealer (I did the inspection elsewhere) and the dealers service department said they would fix it by replacing the intake manifold. I'm not a mechanic so "verifying" this isn't something easy for me to do, unless I can remove a few covers and visually see it's a new manifold.
Now..that said, I figured I could at least run a scan to see if any codes come back, as previously per the inspection there was a P2004 code ( 0521 - Diagnosis of the tumble flap 'Inlet manifold' : Short circuit to ground of sensor wires / Tumble flap shafts are stuck in the Actuated position. (P2004)).
I assume the shop cleared the codes upon completing the work, as my scan showed there were 2 modules in this GL450, and in module 1 there were zero codes altogether, and in module 2 there were none in stored or permanent, but there were a few in pending related to cylinder misfires.
I don't know if these have been there for a while now...or recent.
The car appears to be driving fine (smooth engine, no rough idles, etc)...outside of what feels like bumpiness on the road. My concern was the intake but it doesn't feel like the car system itself is struggling, but likely suspension related as the car drifts to the right. I hope this is the case, anyways.
Is this something I likely just need to clear and see if anything comes back? I have NO check engine light currently.
Is there a fairly easy way I can visually check if the manifold is "new" without dissembling a bunch of stuff?
Now..that said, I figured I could at least run a scan to see if any codes come back, as previously per the inspection there was a P2004 code ( 0521 - Diagnosis of the tumble flap 'Inlet manifold' : Short circuit to ground of sensor wires / Tumble flap shafts are stuck in the Actuated position. (P2004)).
I assume the shop cleared the codes upon completing the work, as my scan showed there were 2 modules in this GL450, and in module 1 there were zero codes altogether, and in module 2 there were none in stored or permanent, but there were a few in pending related to cylinder misfires.
I don't know if these have been there for a while now...or recent.
The car appears to be driving fine (smooth engine, no rough idles, etc)...outside of what feels like bumpiness on the road. My concern was the intake but it doesn't feel like the car system itself is struggling, but likely suspension related as the car drifts to the right. I hope this is the case, anyways.
Is this something I likely just need to clear and see if anything comes back? I have NO check engine light currently.
Is there a fairly easy way I can visually check if the manifold is "new" without dissembling a bunch of stuff?
Last edited by majorchamp; Jul 20, 2019 at 05:29 PM.
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Pending will turn to stored after a few ignition cycles or certain counter values/ occurrences are reached. For all intents and purposes threat pending as stored...
