Code 121 won't clear

Discussion in 'Volvo 240' started by C_J_Nicol, May 10, 2013.

  1. C_J_Nicol

    C_J_Nicol

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    The car would start, run for a couple of secs, then cut out. ECU gave a 1-2-1 code.
    Disconnected the mass air flow, car would start and run, but obviously rough.
    Replaced the mass air flow, and now the car runs fine. However, still shows 121 code,
    and trying to cancel the code using the standard method does not clear the code, and
    the check engine lite remains on.

    Why will the ECU not clear, having replaced mass air flow, I should be in good shape, yes?

    Thank you.

    Chris Nicol.
     
    C_J_Nicol, May 10, 2013
    #1
  2. C_J_Nicol

    C_J_Nicol

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    Have now gotten this cancelled. Procedure a bit flaky on this 240 ;)

    Chris.
     
    C_J_Nicol, May 12, 2013
    #2
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