U0599

Invalid Data Received From DC/DC Converter Control Module A

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine Light Is On
Problems with charging a high-voltage battery
Reduced performance of the hybrid system
Errors in the operation of electrical systems
The car goes into emergency mode

Causes

Malfunction of the DC/DC converter module
Problems with wiring or connectors
Short circuit in the circuit
Software error in the control unit
Module power problems

How to Fix

Check connections and integrity of wiring to the DC/DC module
Scan all modules for additional errors
Check DC/DC module power and grounding
Update control unit software
Replace the DC/DC converter module if necessary

Related codes

U0598 U0600 U0601