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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 03-24-2007, 12:26 PM
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ecu code help

i am gettting 1222 Lambda Control 1, why? what should i do to fix it? please help me.

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#2 (permalink) Old 03-25-2007, 12:05 AM
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1222 is stored when the DME detects excessive deviations in the air-fuel mixture (too rich or too lean) for longer than 10 seconds.

Possible causes: Faulty O2 sensor or bad contacts to O2, fuel tank ran empty or very low, injectors bad or clogged, incorrect fuel pressure (clogged fuel filter, bad regulator, faulty fuel pump), engine temperature sensor bad, intake or exhaust leak, fuel evap control bad or broken vac lines, air flow meter defective and/or the combustion is being messed up by mechanical failure (worn out spark plugs, low compression, intake/exhaust valves, bad plugs, wires, cap rotor, etc)
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