mjanasik

Hi I am getting 2089-1 exhaust back pressure too high reading on my 2007 GL320. This causes the car to sometimes start and then stop a few seconds later. My mechanic replaced the exhaust backpressure sensor and that fixed the problem for a month or so but now it reoccurred. I can unplug the sensor and car drives without turbo.



Any ideas what the cause might be? I assume the likelihood of a faulty replacement sensor is low.

Max Blast

Clogged exhaust, particulate filter if so equipped.