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1992
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Regal V6-191 3.1L
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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DTC 55
DTC 55
The presence of this code indicates an internal error in the powertrain control module (PCM). Make sure PCM ground connections are OK and that "MEM-CAL is properly installed. If OK, replace powertrain control module.