U3026

Control Module A Disable Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable system operation
Check Engine light comes on
Lost Communication with Module A
Reduced vehicle performance

Causes

Wiring harness damage
Contact corrosion
Control module A fault
Grounding problems
Faulty relay or fuse

How to Fix

Check wiring harness for damage
Clean contacts from corrosion
Check the voltage in the circuit
Replace faulty module A if necessary
Repair only from an authorized dealer

Related codes

U3000 U3025 U3027