codes

Asked by Mar 21, 2017 at 06:48 PM about the 1997 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

Code 44

1 Answer

77,905

P0044 - HO2S Heater Control Circuit High Bank 1 Sensor 3...Possible causes; Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 harness is open shorted Heated, Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit poor electrical connection, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 fuse, Faulty Engine Control Module (ECM).

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