- Faulty HV battery assembly
- Faulty Battery ECU
- Engine Light ON (or Service Engine Soon Warning Light)
P3020 DescriptionIf there is an abnormal internal resistance or electromotive voltage in the hybrid battery blocks, the hybrid battery Electronic Control Unit (ECU) determines that a malfunction has occurred. When the malfunction detection condition is satisfied, the battery ECU illuminates the MIL and sets a Diagnostic Trouble Code (DTC).
P3020 Information for specific makes
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