U3027

Control Module A Disable Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine Light Is On
Limitation of system functionality
Possible malfunctions in the operation of related systems
Errors in other control modules

Causes

Short circuit in trip circuit
Control module A fault
Wiring Harness Problems
ECU software error
Contact corrosion

How to Fix

Check trip circuit for short circuit
Diagnose control module A
Check connections and wiring harness
Update ECU firmware
Repair only from an authorized dealer

Related codes

U3026 U3028 U3029