P0E57

DC/DC Converter Input Voltage Too High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–889 (est.)

Symptoms

Check Engine Light Is On
Possible problems with charging a 12V battery
Shutdown or unstable operation of electronic systems
Reduced hybrid system efficiency
In some cases - a complete stop of the car

Causes

DC/DC converter malfunction
Problems with the traction battery of the hybrid system
Open or short circuit in the high voltage circuit
Malfunction of voltage sensors
Software error in the control module

How to Fix

Diagnostics of a high-voltage system using a scanner
Checking the condition and voltage of the traction battery
DC/DC converter testing
Checking the integrity of high-voltage circuits
Updating HCU software if necessary
Repair only from an authorized dealer

Related codes

P0E56 P0E58 P0A7F