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P0052 Diagnostic Trouble Code Discussion for June 2012

Air Fuel Sensor (Bank 2 Sensor 1) Heater Control Circuit High Voltage

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Trouble Ticket Help Requests for DTC P0052
Help Request Posted
1994 Cadillac DeVille Concours 4.6L Surge, MIL Lamp on VIN: 1G6KF52Y1R
P0052: PCM keep alive memory reset. Check engine light comes on intermittently and vehicle surges and chugs. Light will then go out a short time later and vehicle will drive perfectly. Idles as if it has a misfire on one cylinder all the time. No current codes are ever listed. Only history codes...
June 13, 2012