参考含义
这个码是什么意思？
以下表述对应所列厂商与通报。使用前请核对完整报码、报码模块、年款和发动机。
故障码描述检测到的异常，不直接指定必须更换的零件。
限定车辆范围
车型关联可作为查阅线索；具体发动机、生产范围和软件条件请核对厂商资料。
更换零件之前
记录报码及冻结帧，检查蓄电池状态、相关报码和可见的线束或软管损伤。按照该车诊断流程和测试结果决定维修，避免仅凭故障码换件。
扫描记录表 →厂商原文中的含义
原文含义可能随车型和后缀变化。此处按来源展示，不代表通用诊断结论。
P1778STEP MOTOR
厂商技术资料
3以下为英文原文
KIA
TSB: 6 SPD A/T SOLENOID REPLACEMENT – MULTIPLE DTCS - THIS BULLETIN PROVIDES INFORMATION RELATING TO THE REPLACEMENT OF VARIOUS SHIFT SOLENOIDS ON 6-SPEED AUTOMATIC TRANSAXLES WITH DTCS P0741, P0743, P0748, P0753, P0758, P0763, P0768, P0773, P1778 AND P2709. REPLACE THE SOLENOIDS IF CURRENT OR HISTORY CODES ARE PRESENT; DO NOT R…
NISSAN
IF YOU CONFIRM: The vehicle has slower-than-normal acceleration from a stop at times and/or the customer describes the vehicle has slower-than-normal acceleration from a stop at times and/or the MIL is ON with DTC P1778 (STEP MOTOR) stored in Engine and/or Transmission. ACTION: Refer to the REPAIR FLOW CHART on Page 2 of this bu…
NISSAN
IF YOU CONFIRM The vehicle has slower than normal acceleration from a stop at times, and/or the customer describes the vehicle has slower than normal acceleration from a stop at times, and/or The MIL is ON with DTC P1778 (STEP MOTOR) stored in Engine and/or Transmission. and/or Only for Sentra without ABS; MIL is ON with DTC P07…
核对适用车辆
45车型关联可作为查阅线索；具体发动机、生产范围和软件条件请核对厂商资料。
故障码含义与厂商资料
以下为英文原文 · 车型关联可作为查阅线索；具体发动机、生产范围和软件条件请核对厂商资料。
Transmission Reverse I/P Circuit Malfunction
还能继续驾驶吗？
仅靠故障码无法判断是否适合继续行驶。故障灯闪烁、严重抖动、过热、机油压力报警或制动转向异常都需及时处理。影响车辆控制或发动机安全时，应在安全地点停车并寻求帮助。以车辆手册为准。