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Intermittent engine light

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by 39buss, Sep 5, 2017.

  1. 39buss

    39buss Member

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    Hello, 07 reg E280 auto 95000 mls, 2 x MB and 8 x MB specialist ( Macleods of Hull ) stamps in the book, Shell Helux oil and in excellent condition. I've had an intermittent engine light problem and 2 indies gave me a code reading of P0022 incorrect intake position and P0025 incorrect exhaust position and/or possible balancer shaft problem. I'm told there are 4 sensors and wondered if they were all interchangeable. 1 indie suggested doing all 4 for £280 and the other said swap them to the other bank and if the problem follows then its def the sensor at fault. My opinion is replace the faulty one at £25 + labour and see what happens. Yuotube shows the sensors to be very accessible and I'm capable of doing such a job myself as long as there's no diagnostic checks involved after fitting. I've had the car since January and its happened 4 times (1) lasted 4 days (2) lasted 2 days (3) lasted 5 miles (4) lasted 2 miles and each time went off on its own and not been on for about 4 weeks. Thank you Jim
     
  2. Wighty

    Wighty Senior Member

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    When you say Indy , do you mean a Mercedes expert with STAR computer ??
     
  3. LostKiwi

    LostKiwi Senior Member

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    Have you googled M272 engine issues?
     
  4. OP
    39buss

    39buss Member

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    Yes, both their computers are connected to Germany. Staithes garage at Dunston Gateshead and WMB Wearside Mercedes Specialists Sunderland
     
  5. Wighty

    Wighty Senior Member

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    Good luck...I'm out . You may have to go with their best ideas :)
     
  6. OP
    39buss

    39buss Member

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    Not yet but thanks for the info, I'll do that shortly. I'm fairly new on this forum.
     
  7. LostKiwi

    LostKiwi Senior Member

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    Make sure you're sitting down before you do.....
     
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  8. OP
    39buss

    39buss Member

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    I've Googled M272 engine issues and here are the results. M272 engines with improved parts have engine serial numbers higher than.....2729 30 468993. My engine serial no. is.....2729 30 654316. Would you agree that's good news. Hope so. Thanks for all your help. It amazes me the high level of knowledge all you enthusiasts have and willingly share it. Jim
     
  9. OP
    39buss

    39buss Member

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    Engine light came back on yesterday so it's time to go back to the Indy and get a new sensor and see what happens. I may even go to the main dealer and put it on myself .
     
  10. OP
    39buss

    39buss Member

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    Fitted a Bosch sensor yesterday (£50), started the engine and the EML went straight off. Success.......but short lived as it came back on again today. Can anyone tell me if the fault code has to be erased from the ECU after a sensor is fitted. Thx
     
  11. Arzaam

    Arzaam Senior Member

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    since the EML went off when you started it the error code must have gone away as conditions triggering the code were no longer present however since it came back it seems the sensor was not at fault, if the same code has come again then your engine could still be suffering the common m272 issues even if the serial number is not included in the list. you can try scanning and clearing the code again if it still comes up its not the sensor that was bad.
     
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