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Warning triangle and car symbol illuminated on Toyota Yaris hybrid dashboard. Hybrid system fault or battery issue. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.
Based on 0 driver confirmations
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Toyota problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
Warning lights with P3000 hybrid battery fault code. Checked the hybrid battery cooling intake behind the rear seat — absolutely packed with fluff and debris. Vacuumed it out thoroughly. Cleared codes, lights stayed off. Free fix. Check this first.
Parts replaced: None — cleaning only
Triangle and car warning lights came on together. Read the codes — 12v auxiliary battery fault. These need replacing every 3-4 years on the Yaris hybrid regardless of symptoms. New battery from Toyota was £95 fitted. All lights cleared immediately.
Parts replaced: 12v auxiliary battery
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