P0E31

DC/DC Converter Voltage Sensor A Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced hybrid system efficiency
The car goes into emergency mode
Increased fuel consumption
Unstable operation of the electrical system

Causes

Malfunction of the voltage sensor of the DC/DC converter
Open or short circuit in the sensor circuit
Poor contact in connectors
Problems with the DC/DC converter itself
Contact corrosion

How to Fix

Check the integrity of the sensor circuit
Check connections and connectors
Test the voltage sensor
Check the operation of the DC/DC converter
Replace a faulty sensor or converter

Related codes

P0E32 P0E33 P0AFA