P1492
Battery Temperature Sensor Voltage Too high
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Incorrect battery temperature readings
- Battery charging problems
- Reduced hybrid system efficiency
- Check Engine Light Illuminates
- Unstable electrical system operation
Causes
- Battery temperature sensor malfunction
- Open or short circuit in wiring
- Poor contact in connectors
- Problems with the ECU
- Corroded contacts or damaged wiring
How to Fix
- Check the resistance of the battery temperature sensor
- Inspect wiring and connectors for damage
- Check the voltage at the sensor contacts
- Replacing the battery temperature sensor if necessary
- Check and, if necessary, update the ECU firmware