U301D

Control Module Wake-up Circuit A Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Problems starting the engine
Some electronic systems do not work
Check Engine Light Is On
Intermittent operation of electrical equipment

Causes

Open or short circuit in wake-up circuit
Faulty control module
Damaged connectors or corrosion
Fuse problems
Module software error

How to Fix

Check the integrity of the wake-up circuit wiring
Inspect the connectors and clean them from corrosion
Check and replace fuses if necessary
Scan the control module for errors
If necessary, replace the control module

Related codes

U301C U301E U301F