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Old 07-05-2006, 09:41 AM
mbdoc mbdoc is offline
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Join Date: Mar 1999
Location: Tucker, Ga USA
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Those codes have nothing in common...

The P0 422 simply means that the catalyst isn't working..

The P0 455 means that the tank evap system isn't holding OR getting enough vacuum to change the MAP sensor reading at all..evap system codes for leakage can be difficult to find & repair..a repair shop wit a "smoke" machine would be a starting point since you already have replaced the gas cap..

The P0 133 means the O2 sensor is OLD OR that the sensor isn't sweeping back & forth quick enough...a scanner with "freeze frame" data should be able to clear-up that problem...vacuum leaks can cause that problem...

Possible bad purge valve causing 2 of the 3 codes...???
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