Hello again,
Okay, after giving this some thought, I've come up with a couple more possibilities, but we can eliminate one right now. I have included in the diagrams down below a factory test for your vehicle's EGR BPT valve. Go through this simple test and get back to us with what you are able to find out. If the test confirms that the EGR BPT Valve is okay, then we might want to check and see if your catalytic converter might be partially plugged, but let's cross that bridge after we confirm or deny that the EGR BPT valve is working correctly or not.
Thanks,
Alex
2CarPros
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Saturday, June 8th, 2019 AT 11:52 PM