Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2020PRIUS PRIME LIMITEDREPAIR AND DIAGNOSISHYBRID/ELECTRIC POWERTRAINBATTERY MANAGEMENT SYSTEMSHYBRID BATTERY SYSTEM - DIAGNOSTIC CODES (4 OF 5)
2020 Toyota Prius Prime Limited
Hybrid Battery System - Diagnostic Codes (4 Of 5)
2020 Toyota Prius Prime LimitedSECTION Hybrid Battery System - Diagnostic Codes (4 Of 5)
- Hybrid Battery System
- DTC P0E2D-00: Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance [09/2016 - ]
- DTC P0E6D-11: Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Ground [09/2016 - ]
- DTC P0E6D-15: Hybrid/EV Battery Charging System Precharge Contactor Control Circuit Short to Auxiliary Battery or Open [09/2016 - ]
- DTC P1A00-1C: Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range; DTC P1A05-1C: Hybrid Battery Stack 3 Cell Voltage Detection Voltage Out of Range; DTC P1A0A-1C: Hybrid Battery Stack 4 Cell Voltage Detection Voltage Out of Range; DTC P1A10-1C: Hybrid Battery Stack 5 Cell Voltage Detection Voltage Out of Range; DTC P301A-1C: Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range [09/2016 - ]
- DTC P1A60-17: Hybrid/EV Battery Stack 2 Cell Circuit Voltage Above Threshold; DTC P1A63-17: Hybrid/EV Battery Stack 3 Cell Circuit Voltage Above Threshold; DTC P1A66-17: Hybrid/EV Battery Stack 4 Cell Circuit Voltage Above Threshold; DTC P1A69-17: Hybrid/EV Battery Stack 5 Cell Circuit Voltage Above Threshold; DTC P31AA-17: Hybrid/EV Battery Stack 1 Cell Circuit Voltage Above Threshold [09/2016 - ]
- DTC P1A61-16: Hybrid/EV Battery Stack 2 Cell Circuit Voltage Below Threshold; DTC P1A64-16: Hybrid/EV Battery Stack 3 Cell Circuit Voltage Below Threshold; DTC P1A67-16: Hybrid/EV Battery Stack 4 Cell Circuit Voltage Below Threshold; DTC P1A6A-16: Hybrid/EV Battery Stack 5 Cell Circuit Voltage Below Threshold; DTC P31AB-16: Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold [09/2016 - ]
- DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High; DTC P1A8A-00: Hybrid/EV Battery Stack 3 Delta SOC High; DTC P1A90-00: Hybrid/EV Battery Stack 4 Delta SOC High; DTC P1A95-00: Hybrid/EV Battery Stack 5 Delta SOC High [09/2016 - ]
- DTC P1A81-00: Hybrid/EV Battery Stack 1 Delta SOC High (Extreme); DTC P1A86-00: Hybrid/EV Battery Stack 2 Delta SOC High (Extreme); DTC P1A8B-00: Hybrid/EV Battery Stack 3 Delta SOC High (Extreme); DTC P1A91-00: Hybrid/EV Battery Stack 4 Delta SOC High (Extreme); DTC P1A96-00: Hybrid/EV Battery Stack 5 Delta SOC High (Extreme) [09/2016 - ]
- DTC P1AC4-13: Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open; DTC P1AC5-13: Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open; DTC P1AC6-13: Hybrid/EV Battery Stack 3 Current Interrupt Device Circuit Open; DTC P1AC7-13: Hybrid/EV Battery Stack 4 Current Interrupt Device Circuit Open; DTC P1AC8-13: Hybrid/EV Battery Stack 5 Current Interrupt Device Circuit Open [09/2016 - ]
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.