CUSTOMER CONCERN The A/C compressor does not engage. CAUSE The compressor/clutch assembly failed after the clutch power circuit, A/C request data, thermal protector, evaporator-temperature input, ambient-temperature input, and blower operation were checked. CORRECTION Remove and replace the failed A/C compressor and clutch assembly, recharge the refrigerant system, and verify compressor engagement and normal cabin cooling.

CUSTOMER CONCERN Air conditioning is inoperative, the recirculation indicator does not illuminate, and HVAC DTC B2992 indicates an open thermal-protector circuit. CAUSE The A/C compressor thermal-protection circuit was open; bypass testing of the red and blue compressor wires restored the A/C switch and clutch data response. CORRECTION Disable the high-voltage system, remove and replace the failed A/C compressor assembly, clear DTC B2992, and verify A/C and recirculation-indi

CUSTOMER CONCERN The engine will not crank forward and can only be rotated backward by hand. CAUSE Removing the serpentine belt freed the engine, and inspection confirmed the A/C compressor clutch was seized. CORRECTION Remove and replace the A/C compressor assembly, reinstall the serpentine belt, and verify normal engine cranking and starting operation.

CUSTOMER CONCERN The air conditioning is inoperative and thermal-protector open-circuit DTC B2992 resets immediately. CAUSE Voltage entered but did not exit the normally closed compressor thermal-protector circuit, confirming an open thermal protector inside the A/C compressor. CORRECTION Remove and replace the A/C compressor assembly, clear B2992, and verify air-conditioning operation.

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 engine starts on the 12-volt starter, but the hybrid system does not operate. DTCs U1205 and U0037 are stored. CAUSE CAN-network testing confirmed an internal Motor Control Module failure. Module communication was intermittent, and scan-tool parameter data was incomplete when communication was available. CORRECTION Remove and replace the Motor Control Module, program the replacement module, and verify hybrid-system operation.

CUSTOMER CONCERN Air conditioning is inoperative and DTC B2992 returns after clearing. CAUSE The climate-control panel had already been replaced, and testing of the Blue/Red and Red circuits from the compressor to climate-control-panel pins B11 and B12 confirmed the air-conditioning compressor had failed. CORRECTION Remove and replace the failed air-conditioning compressor.

CUSTOMER CONCERN Electric steering assist is excessive when turning left and requires unusually high effort when turning right. CAUSE Torque-sensor data read approximately -2.5 at center, -3.1 while turning left, and 0.6–1.7 while turning right, confirming an incorrect torque-sensor zero point. CORRECTION Perform the electric power-steering torque-sensor zero-point calibration and verify balanced steering assist.

CUSTOMER CONCERN Vehicle has a severe transmission shudder when accelerating from a stop. CAUSE Testing and the applicable Honda transmission bulletin confirmed an internal continuously variable transmission failure. CORRECTION Remove and replace the failed continuously variable transmission.

CUSTOMER CONCERN Advanced hydraulic-booster pump remains on and the brake system stores code 14. CAUSE The pump produced approximately 1,740 psi, but pressure dropped with no external fluid leak, confirming an internal leak in the advanced hydraulic-booster servo unit. CORRECTION Remove and replace the internally leaking advanced hydraulic-booster servo unit.

CUSTOMER CONCERN The engine intermittently runs rough and has low power with DTC P0339 stored. CAUSE Power, ground, signal-circuit, and pattern checks confirmed an intermittent crankshaft-position sensor failure. CORRECTION Remove and replace the crankshaft-position sensor, then perform the crankshaft-pattern clear and relearn.

CUSTOMER CONCERN The check engine light is on with catalyst-efficiency DTC P0420 stored. CAUSE Fuel-trim, exhaust-leak, and oxygen-sensor checks confirmed that the catalytic converter was no longer operating efficiently. CORRECTION Remove and replace the catalytic converter.

CUSTOMER CONCERN The engine idles too high after throttle-body cleaning, and DTC P0507 may return intermittently. CAUSE The throttle-position learned value was not reset after service, leaving the idle control strategy out of calibration. CORRECTION Reset the throttle-position learned value and perform the idle relearn procedure.

CUSTOMER CONCERN The check engine, brake, TPMS, IMA, and stability-control warning lights come on when engine-compartment temperature rises; the vehicle operates normally when cold. CAUSE Heat testing confirmed an internal temperature-sensitive failure in the Powertrain Control Module. CORRECTION Remove and replace the Powertrain Control Module.

CUSTOMER CONCERN The check engine and IMA warning lights are on with DTC P0A7F stored. CAUSE Battery-module testing and the applicable Honda bulletin confirmed deterioration inside the high-voltage IMA battery. CORRECTION Remove and replace the high-voltage IMA battery, then update the Motor Control Module with the applicable calibration.

CUSTOMER CONCERN Customer states the IMA and check-engine lights are on. DTCs P0A7F, P1570 and P1435 are stored. CAUSE Battery-module testing and Honda TSB 09-025 confirmed deterioration inside the high-voltage IMA battery pack. CORRECTION Remove and replace high-voltage IMA battery pack. Reflash applicable IMA control software and clear DTCs.

CUSTOMER CONCERN Customer states the battery warning light is on and the 12-volt charging system is inoperative. DTC P0A94 is stored. CAUSE Battery cables between the DC-DC converter and 12-volt battery were clean and tight, confirming an internal DC-DC converter failure. CORRECTION Remove and replace DC-DC converter. Clear DTC P0A94 and verify 12-volt charging operation.

CUSTOMER CONCERN Customer states the 12-volt charging system is inoperative after high-voltage battery replacement and DTC P0A94 is stored. CAUSE Fuse 3 and the power supply at terminal 2 of the DC-DC converter four-pin black connector tested correctly, confirming an internal DC-DC converter fault. CORRECTION Remove and replace DC-DC converter. Clear DTC P0A94 and verify 12-volt charging operation.

CUSTOMER CONCERN Customer states the IMA and check-engine lights are on with P0A7F, P1570 and P1435. CAUSE Battery-block testing confirmed high-voltage IMA battery deterioration. CORRECTION Remove and replace high-voltage IMA battery pack. Program applicable control-module software and clear DTCs.

CUSTOMER CONCERN The IMA and check-engine lights were on, DTC P0A7F was stored, and power could drop enough that the vehicle struggled to exceed 35 mph uphill. CAUSE The high-voltage IMA battery had deteriorated. CORRECTION The high-voltage battery was replaced and the required control-module software was updated.