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 2.9 GTA/GTAm?
This guide contains one workshop bulletin for the Alfa Romeo Giulia 2.9 GTA/GTAm. 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 2.9 GTA/GTAm 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 2.9 GTA/GTAm faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.