U040D

Invalid Data Received From Turbocharger/Supercharger Control Module A

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Loss of engine power
Deterioration in acceleration dynamics
Irregular operation of the turbocharger
Possible transition to emergency operation

Causes

Malfunction of the turbocharger control module
Open or short circuit in the communication circuit
Problems with connecting connectors
Engine control unit malfunction
Software errors in the control module

How to Fix

Check the integrity of the wiring harness to the control module
Check the condition of connectors and contacts
Scan the control module for errors
If necessary, replace the turbocharger control module
Update ECU software

Related codes

U040C U040E U0415