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Code 1-1-2-3
#1

HELP !!! Oxygen Regulation Code 1-1-2-3: We have changed the Oxygen Sensor, cleaned the MAS Air Flow and run 91 oct gas, The code still pops up on check system. What else do I have to do in order to remove code and Warning Light?



Cheers,

Larry
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#2

That code will come up if there is a big leak in the system. Check for leaks in the intake, like in the rubber boot to the throttle body, there was a TSB for those cracking on the early cars .



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2016 Cayman S
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94 968 Cab 6 Spd. Black/Cashmere D1R SC
86.5 928 Garnet Red Metallic
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