U3033

Control Module Security Certificate Missing/Invalid

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

~$167 (est.)

Symptoms

Check Engine light comes on
The car may not start
Engine power limitation
Blocking some functions
Security error message on display

Causes

Replacing the electronic control unit
Software reset or corruption
Attempted unauthorized access
Error when flashing the ECU
Immobilizer problems

How to Fix

Diagnostics using a scanner at an official dealer
Reflashing the control unit
Re-registering a module in the system
Checking and setting up the immobilizer
Repair only from an authorized dealer

Related codes

U3000 U3003 U3015