CUSTOMER CONCERN Customer states the check-engine light is on with misfire codes even though the engine runs smoothly and no misfire is felt. CAUSE Diagnosis confirmed the PCM calibration was falsely detecting cylinder misfires. CORRECTION Program PCM with updated calibration. Clear misfire DTCs and perform crankshaft-position relearn.

CUSTOMER CONCERN Customer states the IMA warning is on and DTC P0A7F is stored. CAUSE Hybrid-battery testing confirmed battery-module deterioration. CORRECTION Remove and replace high-voltage IMA battery pack. Clear IMA DTCs.