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P0057 Diagnostic Trouble Code Discussion for June 2019

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Control Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0057
Help Request Posted
2005 Jeep Grand Cherokee Limited 4.7L MIL Lamp on VIN: 1J8HS58N45
P0057: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Low. All four O2 sensor heater circuits flagged a code at the same time. But the MIL has been on for the last year with an EGR code the cust declined to fix. The MIL comes on immediately after the codes are erased. Checked resistance to ground and V drop in com...
June 25, 2019