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CUSTOMER CONCERN The IMA warning is active and DTCs P0A78 and P1440 are stored for an MPI internal/output-circuit fault. CAUSE MPI power and ground circuit checks passed, confirming an internal failure of the Motor Power Inverter module. CORRECTION Remove and replace the Motor Power Inverter module, clear P0A78 and P1440, and verify IMA-system operation.

CUSTOMER CONCERN The check-engine light is on and DTC P0442 is stored. CAUSE Smoke testing confirmed an EVAP leak at the capless fuel-filler-neck flap. CORRECTION Remove and replace the fuel filler neck, clear P0442, and verify the EVAP system seals correctly.

CUSTOMER CONCERN DTCs C0561, C0299, and C12FF set after sequential module programming. CAUSE The Electronic Brake Control Module learn procedures were not completed after programming. CORRECTION Perform the Electronic Brake Control Module relearn procedures specified by PIT4967A, clear C0561, C0299, and C12FF, and verify brake-system operation.

CUSTOMER CONCERN The Service Hybrid System message is displayed, the Serial Data Gateway Module does not communicate, and DTC B1000 is stored. CAUSE Power and ground load tests passed, confirming an internal failure of the Serial Data Gateway Module. CORRECTION Remove and replace the Serial Data Gateway Module, program and configure the replacement module, clear B1000, and verify hybrid-system communication.

CUSTOMER CONCERN The engine overheats after collision-related radiator replacement and stores DTC P1285. CAUSE The confirmed repair identified a failed engine water pump; multiple exact-vehicle fixes replaced the pump for this overheating condition. CORRECTION Remove and replace the engine water pump, refill and bleed the cooling system, clear P1285, and verify normal engine temperature.

CUSTOMER CONCERN The engine misfires and stores DTC P0300, with the misfire isolated to one cylinder. CAUSE Swapping the spark plug and wire moved the misfire to another cylinder, confirming failed ignition secondary components. CORRECTION Remove and replace the spark plugs and spark-plug wires, clear DTC P0300, and verify the misfire is eliminated.

CUSTOMER CONCERN The vehicle intermittently will not enter Ready to Drive mode and may not engage reverse when Ready, with multiple powertrain DTCs stored. CAUSE Cooling-system pressure testing confirmed coolant leakage from the upper high-voltage battery assembly. CORRECTION Remove and replace the upper high-voltage battery assembly, program the replacement battery, refill and bleed the electric-powertrain cooling system, clear the DTCs, and verify Ready mode and reverse ope

CUSTOMER CONCERN The radio controls are inoperative, the Audio Control Module will not communicate, and the other audio modules store DTC U0184. CAUSE Power, ground, and CAN-network circuits tested correctly, confirming an internal failure of the Audio Control Module. CORRECTION Remove and replace the Audio Control Module, program the replacement module as required, clear U0184, and verify radio-control and audio operation.

CUSTOMER CONCERN The vehicle will not start or move under electric power after transmission work and stores DTCs P0A0C and P1E00. CAUSE The power-inverter-module cable cover did not complete the high-voltage interlock circuit because it was missing, damaged, or incorrectly seated. CORRECTION Remove and replace the power-inverter-module cable cover, seat the high-voltage interlock connector correctly, clear P0A0C and P1E00, and verify Ready mode and propulsion.

CUSTOMER CONCERN The Service High Voltage Charging System message is displayed with DTCs P1FFD and P1FFF. CAUSE Graphing the battery coolant-level-sensor circuit showed intermittent voltage spikes to 5 volts instead of the normal 3.5 volts, confirming a sensor-harness fault. CORRECTION Remove and replace the drive-motor battery coolant-level sensor harness, program the HPCM2 and BECM updates supported by the repair, clear P1FFD and P1FFF, and verify charging-system operation.