P0C3D

DC/DC Converter Temperature Sensor B Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Inability to charge high voltage battery
DC/DC converter overheating
Errors in the operation of auxiliary systems

Causes

Open or short circuit in the sensor circuit
Temperature sensor B fault
Poor contact in wiring connectors
Wiring harness damage
DC/DC converter malfunction

How to Fix

Check the continuity of the temperature sensor circuit
Test sensor resistance
Inspect connectors and wiring for damage
Replace temperature sensor if necessary
Check the operation of the DC/DC converter

Related codes

P0C3C P0C3E P0C3F