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Sensors changed, still intermittent limp mode

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Chris Wild, Jun 30, 2020.

  1. Chris Wild

    Chris Wild New Registration

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    Joined:
    Jun 30, 2020
    Your Mercedes:
    E class 2013 2.1 diesel
    Hi I bought a 2013 e class coupe 2.1 diesel 3 weeks ago. It kept going in and out of limp mode so I booked it into my local merc specialist who use STAR diagnostics. Just after I booked it in I drove about 1.5 hour on the motorway and between then and it actually going in the garage it never went into limp mode again but I took it anyway. The code that came up was for an exhaust pressure sensor which I had fitted. I left the garage and it went straight back into limp mode so I took it straight back. This time the computer said it was the DPF sensor so they changed that for me and still in limp mode! It even has the modified connector fitted to stop loose wiring from engine rattle. I was told to run it around for a week and try and go on another long run and see if it sorts itself out before they have to do further investigations. The diagnostics machine wasn’t showing up any other fault codes. Any ideas?
    Thanks, Chris
     
  2. onefortheroad

    onefortheroad Senior Member

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    Location:
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    Your Mercedes:
    c207 e350 cdi 2017 . ford kuga 65 plate awd powershift .
    Probably needs a forced regeneration. Star would show soot levels etc.
     
  3. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    Location:
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    Your Mercedes:
    C220CDI AMG Line Premium, SLR McLaren Roadster, SL55 & C32AMG
    Have they updated the software to match the sensors? Particularly the DPF pressure sensor.
     

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