Mercury Mariner Hybrid Problem Report

Mercury Mariner Hybrid Check Engine Light With Code P0442, P0456, and/or P1450

(1 report)

The Check Engine Light may illuminate with code P0442, P0456, and/or P1450. These codes are related to the EVAP system. Our technicians tell us that if no EVAP system faults are confirmed, updated software is available for the powertrain control module (PCM) which should correct this concern.

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