P0E99

DC/DC Converter Voltage Sensor C Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Interruptions in the operation of electrical equipment
Problems with charging a high-voltage battery

Causes

Voltage sensor fault C
Open or short circuit in the sensor circuit
Wiring Harness Problems
DC/DC converter malfunction
Problems with the hybrid system ECU

How to Fix

Check continuity of voltage sensor C circuit
Test voltage sensor C
Inspect the wiring harness for damage
Check the operation of the DC/DC converter
If necessary, replace the sensor or converter