Code 42 is the ignition module faulty or loose connections.
You clear code 42 just as you clear any other code. Disconnect the battery cable from the battery for 30 seconds, then reconnect. (It's good practice to disconnect the battery cable whenever disconnecting or changing any electrical components.) Afterwards, check the "check engine light" to see if the code 42 is cleared. This answer applies only to '95 and older models (OBD-1).
42 gallons
1993 Grand Am 3.3L V6 (6-204) - Solved intermittent "Code 42 - electronic spark timing" issue by replacing Mass Air Flow sensor, after checking all wires in harness (and replacing some) between the ECM and ICM, check all connections, and replacing all the other sensors. All work prior to replacing MAF improved performance but did solve intermittent Code 42 problem. Never got a MAF sensor Code 34.
John and Leeza from Hollywood - 1993 1-42 was released on: USA: 10 August 1993
Bonkers - 1993 Cartoon Cornered 1-42 was released on: USA: 29 October 1993
42-42-564
42 IS THE ANWSER
1993 Grand Am 3.3L V6 (6-204) - Solved intermittent "Code 42 - electronic spark timing" issue by replacing Mass Air Flow sensor, after checking all wires in harness (and replacing some) between the ECM and ICM, checking all connections, and replacing all the other sensors. All work prior to replacing MAF sensor improved performance but did NOT solve intermittent Code 42 problem. Never got a "MAF sensor" Code 34.
i want swift code for halifax bank sort 11-06-42
Late Show with David Letterman - 1993 15-42 was released on: USA: 11 January 2008
Late Show with David Letterman - 1993 18-42 was released on: USA: 15 November 2010
Late Show with David Letterman - 1993 20-42 was released on: USA: 14 November 2012