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Discussion Starter · #1 ·
I was driving my 2016 RDX about 40-45 mph and it went into limp mode, could barely make it up a hill and only about 20-25 mph max speed. The check engine light came on with "Check Emission System".

When I turn it off and turn it back on, the parked car just seems to be revving itself too... RPMs go up then back down, up then down.

I checked and it's giving a P2652 code (B Rocker Arm Actuator System Stuck On Bank1).

Anybody have experience or recommendations on the culprit? This is the first time I've experienced "limp mode" on this car. For reference I changed the oil and transmission fluid about 3 weeks ago.
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