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2011 Toyota Prius – Check Engine and Master Warning Lights With P0A80

Aug 16
1 min read

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.

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2011 Toyota Prius – Check Engine and Master Warning Lights With P0A80

CUSTOMER CONCERN

CAUSE

CORRECTION

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