U0307

Software Incompatibility With Glow Plug Control Module 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Difficulty starting the engine in cold weather
Check Engine indicator on the dashboard
Reduced engine power
Increased fuel consumption
Unstable engine operation at idle

Causes

Incompatible software versions in the ECU and control module
Software bugs
Problems with wiring between modules
Malfunction of the glow plug control module
Damaged connectors or corroded contacts

How to Fix

Check software versions in both modules
Update or reinstall the software in the problematic module
Check the integrity of wiring and connectors
Test the glow plug control module
If necessary, replace the control module

Related codes

U0300 U0301 U0308