P0C3B

DC/DC Converter Temperature Sensor A High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Hybrid system warning on dashboard
Reduced performance of the hybrid system
Disabling some electrical functions
Increased temperature in the engine compartment

Causes

DC/DC converter temperature sensor malfunction
Problems with the converter cooling system
Short circuit in the sensor circuit
Internal problems with the DC/DC converter
Damaged wiring or poor contact

How to Fix

Check the temperature sensor readings using a diagnostic scanner
Inspect the cooling system of the DC/DC converter
Check the integrity of the sensor circuit and connectors
Replace temperature sensor if necessary
Check and, if necessary, replace the DC/DC converter

Related codes

P0C3A P0C3C P0C3D