Engine & fuel system
1 documented fault — symptoms, causes and workshop fixes.
Incorrect fuel gauge reading
Multifunction control module software fault. Fix: re-program with updated software.
Overview
- Affects
- All models, MY 2020→.
- Remedy
- Software update
Symptoms
Door mirrors intermittent operation or not working. Heated rear window intermittent operation or not working. Incorrect fuel gauge reading immediately after re-fuelling vehicle.
Repair steps
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program multifunction control module with upgraded software.
- Erase any stored trouble codes.
Data: Motorwise Workshop. Bulletin 1.
Glossary
Technical terms used in this guide.
- Trouble Codes
- Standardised fault codes stored by the engine control module, read with a diagnostic tool
- Multifunction Control Module
- The control module that runs shared electrical functions (lights, wipers, locking, and so on)
- Re-Program
- Update the software on a control module using the manufacturer's diagnostic tool
Frequently asked questions
What are the common faults with the Alfa Romeo Giulia 2.0?
This guide contains one workshop bulletin for the Alfa Romeo Giulia 2.0. Of these, one concerns the engine and fuel system. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Alfa Romeo Giulia 2.0 have these faults?
No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.
Can I check for Alfa Romeo Giulia 2.0 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.