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  1. #1
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    Member No: 30167 Teedub is an unknown quantity at this point Teedub's Avatar
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    Mar 2002
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    Check Engine Error code 1221

    Just wondering about the check engine err code that I got using Bentley manual. 1994 525i. Blink code came back 1-2-2-1, meaning some general failure EMC system. Car starts & runs fine. Should I be worried? Have it scoped? Clear the code & see if it comes back? Thanks in advance.

    Todd1984 318i since 2000. Not much to look at, but a faithful, fun car. Won my heart to BMW as soon as I took the wheel. When I had to part with it in 07, 'twas like putting down the family dog.
    Now a '94 525i. Comfy cruiser, more complex than the 318. Solid & classy.

  2. #2
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    Member No: bonzo's Avatar

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    Re: Check Engine Error code 1221

    1221 for the 94 M50 is oxygen sensor failure. Would'nt hurt to clear the code and try again. Usually with an O2 sens. failure the check engine light will come on and stay on, sounds like your check engine light goes out after starting? Good luck!

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