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Home >> Cadillac >> 1995 >> DeVille Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.9L >> Pcm Code Charts >> Code P048, EGR System Malfunction >> Failure Conditions
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Failure Conditions

PCM turns off EGR system for 5 seconds. PCM monitors rear short term fuel trim for a change. Rear short term fuel trim change less than 14 counts; increment counter. Counter reaches 3; Code P048 set.

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