U0306

Software Incompatibility With Fuel Injector Control Module

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$33–167 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Check Engine light comes on
Loss of engine power
The engine may not start

Causes

Incorrect ECU software update
Using inappropriate software
Memory damage to the injector control module
Problems with communication between modules
Mechanical damage to the control module

How to Fix

Check the software version in the ECU and injector control module
Reflash the injector control module
Update ECU software to the latest version
Check the integrity of wiring and connectors
If necessary, replace the injector control module

Related codes

U0300 U0301 U0305 U0307