P00B3

Radiator Coolant Temperature Sensor Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–56 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Engine overheating
Check Engine Light Illuminates

Causes

Coolant temperature sensor malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
ECU malfunction

How to Fix

Check the integrity of the wiring harness and connectors
Check the resistance of the coolant temperature sensor
Replace the coolant temperature sensor if necessary
Check the operation of the computer

Related codes

P0115 P0116 P0117 P0118