Engine & fuel system
2 documented faults — symptoms, causes and workshop fixes.
Failure to start
Symptoms
Trouble code stored: P0A0D.
Cause
Hybrid battery pack isolator incorrectly fitted after battery pack isolation.
Repair
- Ensure hybrid battery pack isolator fitted correctly.
Data: Motorwise Workshop. Bulletin 2.
Unable to remove in-tank fuel pump
Overview
- Affects
- All models with in-tank fuel pump assembly retaining ring.
- Remedy
- Fit new part
Cause
Retaining ring for fuel pump assembly seized to fuel tank.
Repair
- Cut through retaining ring to enable removal from fuel tank. Avoid damaging fuel tank threads.
- Inspect fuel tank threads for damage. If fuel tank threads damaged or new retaining ring will not tighten: Fit new fuel tank.
Data: Motorwise Workshop. Bulletin 3.
Brakes
1 documented fault — symptoms, causes and workshop fixes.
Brakes squeal
Overview
- Affects
- All models.
Cause
Replacement brake pads fitted without anti-squeal shims.
Repair
- Ensure brake pad anti-squeal shims are fitted.
- Replacement shims available separately.
Data: Motorwise Workshop. Bulletin 1.
Glossary
Technical terms used in this guide.
- In-Tank Fuel Pump
- The fuel pump mounted inside the fuel tank
- Trouble Code
- A standardised fault code stored by a control module, read with a diagnostic tool
Frequently asked questions
What are the common faults with the Toyota Prius 1.5?
This guide contains three workshop bulletins for the Toyota Prius 1.5. Of these, two concern the engine and fuel system and one the brakes. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Prius 1.5 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 Toyota Prius 1.5 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.