CUSTOMER CONCERN The vehicle will not start, hybrid-battery state of charge is low, and auxiliary-battery-temperature-sensor DTC P1B03 returns immediately after clearing. CAUSE The auxiliary-battery temperature-sensor connector was left unplugged after battery replacement, opening the sensor circuit and blocking a forced engine start. CORRECTION Reconnect and secure the auxiliary-battery temperature-sensor connector, clear DTC P1B03, use the scan tool to command an engine sta