2017-10-10
Illuminated check engine light
Poor fuel efficiency
Reduced engine power or acceleration
Difficulty starting the engine
Malfunctioning battery temperature sensor
Damaged wiring or connections in the sensor circuit
Corrosion on electrical connections
Faulty battery
Battery Temperature Sensor: Batteries are temperature-sensitive and a battery's optimal operating temperature range is 40 to 70 degrees Fahrenheit. Battery temperature sensor monitors battery temperature during charging. If it senses a temperature variation, it orders the computer control system to change the charging rate. Problems make it hard to start car and may cause stalling
Replace the battery temperature sensor
Check and repair any damaged wiring or connections
Clean any corroded electrical connections
Replace the battery if necessary