P0E39

DC/DC Converter Voltage Sensor B High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced performance of the hybrid system
Problems charging a 12-volt battery
The car may go into emergency mode
Possible error messages on the dashboard

Causes

Malfunction of voltage sensor B DC/DC converter
Damage or corrosion in the sensor circuit
Wiring Harness Problems
Malfunction of the DC/DC converter itself
Circuit Grounding Problems

How to Fix

Check continuity of voltage sensor B circuit
Check connections and contacts in the circuit
Test voltage sensor B
If necessary, replace the voltage sensor
Check and, if necessary, replace the DC/DC converter

Related codes