P0E38

DC/DC Converter Voltage Sensor B Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Problems charging a 12-volt battery
Incorrect operation of the vehicle's electronic systems

Causes

Malfunction of voltage sensor B DC/DC converter
Open or short circuit in the sensor circuit
Problems with DC/DC converter
Poor contact in wiring connectors
Control unit malfunction

How to Fix

Check continuity of sensor B circuit
Check connectors and contacts for oxidation
Test voltage sensor B
Check the operation of the DC/DC converter
If necessary, replace faulty components

Related codes

P0E39 P0E37 P0E36