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Fault code 413 850

Hi All:


Just got my 94 850 out of the shop to have the o2 sensor and exhaust manifold replaced (1,100.00 ouch) and my check engine light came on.

Does anyone know if the EGR temperature sensor is part of the EGR controller? I see it's about a 200.00 part, but wondered if maybe there is just a loose clip somewhere.

Thanks in advance for your help.

460,000 miles, still going strong.










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    Fault code 413 850

    No its not part of the controller. It just screws into the side of the EGR valve body itself. Its on the battery side of the EGR valve body about the size of a nickle with a heat shrink wrapped pair of wires coming out of it. The short length of wire plugs into the engine bay harness. Check the condition of the plug contacts, unplug it and clean the contacts. It pretty rare for the temp sensor itself to ever go bad, its usually a buildup of corrosion on the plug contacts that kills the connection. You have to remove the intercooler top hose and maybe the plastic cover over the throttle pulley to get to the sensor. It's a rare item to fail so you'll probably have to get it from the dealer if you do need one. But clean the contacts and clear the code and see if it comes back. Good luck.


    Mike








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      Fault code 413 850

      Thanks Mike, I'll check it out.







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