U3028

Control Module A Disable Feedback Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine Light Is On
Unstable operation of vehicle systems
Disable some features
Errors in other systems

Causes

Open or short circuit in feedback circuit
Poor contact in connectors
Control module A fault
Module power problems
Contact corrosion

How to Fix

Check the integrity of the feedback circuit wiring
Inspect and clean the connector contacts
Check the power supply and ground of the module
Test control module A
Replace faulty components

Related codes

U3000 U3027 U3029