Drivetrain (Cooper S) MINI Cooper S (R56) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Help ID 3 trouble codes? Thanks!

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Old Feb 3, 2014 | 10:52 AM
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Ian Landesman's Avatar
Ian Landesman
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Found info. Edited post and removing everything except answer for the next person who searches.

277B - CEL for No cats
276A (P0420) Catalytic-converter conversion – Catalytic-converter efficiency too low.
2B51 - 02 sensor?
 

Last edited by Ian Landesman; Feb 3, 2014 at 08:12 PM.
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