P1493
Battery Temperature Sensor Signal Too Low Condition
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–44 (est.)
Symptoms
- Incorrect battery temperature readings
- Battery charging problems
- Check Engine Light Illuminates
- Reduced charging system efficiency
Causes
- Faulty battery temperature sensor
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Engine control unit malfunction
How to Fix
- Check the continuity of the battery temperature sensor circuit
- Check sensor resistance at different temperatures
- Inspect connectors and wires for damage
- If necessary, replace the battery temperature sensor
- Test the engine control unit