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比亚迪BYD宋预充失败，高压四合一电控故障—新能源汽车维修
比亚迪BYD宋无法上高压，报预充失败故障，检测后发现高压四合一电控，预充电阻烧坏，无法上高压，更换后可以正常上电、行驶
新能源电动汽车维修培训、原理与结构734/1365
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