P2B26

Hybrid/EV Electronics Coolant Temperature Sensor C Circuit Low

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$22–56 (est.)

Symptoms

Check Engine Light Is On
Reduced performance of the hybrid system
Incorrect temperature readings on the dashboard
Turning the cooling fan on permanently

Causes

Coolant temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor connection in the sensor connector
Engine control module (ECM) malfunction
Problems with power or grounding of the sensor circuit

How to Fix

Check sensor resistance at different temperatures
Inspect wiring and connectors for damage
Check voltage and continuity
If necessary, replace the coolant temperature sensor
Reset the code and test the cooling system

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