Toyota2017–2023

Prius 1.8 PHEV: Common faults & known problems

Common faults & known problems

1 known fault documented in workshop bulletins. Of these, one concerns the engine and fuel system. Symptoms, causes, repair steps and part numbers are shown where supplied.

Engine & fuel system

1 documented fault — symptoms, causes and workshop fixes.

Engine overheating

Overview

Affects
All models with 2ZR-FXE engine code.
Remedy
Fit modified part
Parts
1 part

Symptoms

Coolant loss with no signs of coolant leak. White smoke coming from exhaust.

Cause

Unsatisfactory design of cylinder head gasket.

Repair

  1. Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
  2. If no fault(s) found: Fit modified cylinder head gasket.
Parts1 part
Parts listed in the bulletin
PartPart numberQty
Cylinder head gasket11115-370901

Data: Motorwise Workshop. Bulletin 1.

Glossary

Technical terms used in this guide.

Head Gasket
The seal between the cylinder head and the engine block

Frequently asked questions

What are the common faults with the Toyota Prius 1.8 PHEV?

This guide contains one workshop bulletin for the Toyota Prius 1.8 PHEV. Of these, one concerns the engine and fuel system. Symptoms, causes, repair steps and part numbers are shown where supplied.

Does every Toyota Prius 1.8 PHEV 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 1.8 PHEV faults myself?

Many of them. The documented symptoms can be seen, heard or felt during a test drive.

Related guides

Glossary term

See in the glossary →