CUSTOMER CONCERN Check Hybrid System warning is on with P0A80, P3000, C1259, and C1310. CAUSE Confirmed failed high-voltage hybrid battery pack. CORRECTION Remove and replace the high-voltage hybrid battery pack, clear DTCs, and verify battery block voltages and hybrid-system operation.

CUSTOMER CONCERN Check-engine and master-warning lights are on, and P0A80 returns every few days. CAUSE Confirmed deteriorated high-voltage hybrid battery pack. CORRECTION Remove and replace the high-voltage hybrid battery pack, clear DTC P0A80, and verify hybrid-system operation.

CUSTOMER CONCERN Check-engine and master-warning lights return every few days with DTC P0A80. CAUSE Battery-cooling-fan service did not prevent P0A80 from returning. Hybrid battery block monitoring and repeated exact-source confirmations identified a deteriorated high-voltage battery pack. CORRECTION Remove and replace the high-voltage battery pack, clear DTC P0A80, and verify the hybrid warning lights remain off.

CUSTOMER CONCERN The check-engine and master warning lights return with DTC P0A80 stored. CAUSE Hybrid-battery block-voltage testing confirmed deterioration inside the high-voltage battery pack. CORRECTION Remove and replace the failed high-voltage hybrid battery pack.

CUSTOMER CONCERN The hybrid warning is on, and DTC P0A80 is stored. CAUSE Battery-block voltage testing confirmed excessive voltage variation caused by deterioration inside the high-voltage battery pack. CORRECTION Remove and replace the failed high-voltage hybrid battery pack.

CUSTOMER CONCERN The check engine and hybrid warning lights are on with DTC P0A80 stored. CAUSE Battery-block voltage testing confirmed excessive voltage variation caused by deterioration inside the high-voltage battery pack. CORRECTION Remove and replace the high-voltage hybrid battery pack.

CUSTOMER CONCERN Customer states the check-engine and master warning lights are on. DTCs P0A80 and P3193 are stored, although the engine appears to run normally. CAUSE Hybrid-battery block-voltage testing confirmed abnormal voltage variation inside the high-voltage battery pack. CORRECTION Remove and replace high-voltage battery pack. Clear hybrid-system DTCs and verify battery block voltages remain balanced.

CUSTOMER CONCERN Customer states the master warning and check-engine lights are on. DTC P0A80 is stored. CAUSE Hybrid-battery block-voltage testing confirmed excessive voltage variation inside the high-voltage battery pack. CORRECTION Remove and replace high-voltage battery pack. Clear hybrid-system DTCs.

CUSTOMER CONCERN Customer states the check-hybrid-system warning is on and DTC P0A80 is stored. CAUSE Hybrid-battery voltage testing found more than a 0.5-volt difference between battery blocks, confirming high-voltage battery deterioration. CORRECTION Remove and replace high-voltage battery pack. Clear hybrid-system DTCs.

CUSTOMER CONCERN Customer states the malfunction indicator light is on and DTC P0A80 is stored, with no noticeable drivability complaint. CAUSE Hybrid-battery block-voltage testing confirmed an abnormal voltage difference inside the high-voltage battery pack. CORRECTION Remove and replace high-voltage battery pack. Clear hybrid-system DTCs.

CUSTOMER CONCERN Customer states hybrid-system warning lights are on and DTCs P0A80 and P3015 are stored. CAUSE Hybrid-battery stress testing showed battery block 5 dropping excessively under load, confirming deterioration inside the high-voltage battery pack. CORRECTION Remove and replace high-voltage battery pack. Clear hybrid-system DTCs.