Engine & fuel system
1 documented fault — symptoms, causes and workshop fixes.
Engine malfunction indicator lamp (MIL) illuminated. Trouble code stored: P1656
Overview
- Affects
- All models with 1NZ-FE/2NZ-FE engine codes.
- Fault codes
P1656
Cause
Camshaft position (CMP) oil pressure valve not operating properly due to inferior quality engine oil.
Repair
- Flush engine oil system with a suitable flushing oil.
- Change engine oil and filter.
Data: Motorwise Workshop. Bulletin 6.
Electrical & ignition
1 documented fault — symptoms, causes and workshop fixes.
Whistling noise when driving with front door window open
Cause
Poor manufacture of door mirror.
Repair
- Renew door mirror.
Data: Motorwise Workshop. Bulletin 3.
Brakes
2 documented faults — 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.
ABS warning lamp illuminated
Overview
- Affects
- All models.
- Fault codes
C0000
Symptoms
Trouble code stored in ABS control module fault memory: C0000.
Cause
ABS control module faulty.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Replace ABS control module.
Data: Motorwise Workshop. Bulletin 4.
Body & trim
2 documented faults — symptoms, causes and workshop fixes.
Buzzing or rattling noises from front seat belt and seat belt buckle
Overview
- Affects
- All models built in Japan.
Cause
Seat belt upper anchorage point trim panel vibrating.
Seat belt buckle vibrating against seat side trim panel.
Repair
- Apply felt tape to back of seat belt upper anchorage point trim panel.
- Apply felt tape to seat belt buckle.
Data: Motorwise Workshop. Bulletin 2.
Bonnet will not open
Cause
Unsatisfactory design of bonnet release cable.
Repair
- Fit modified bonnet release cable.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Bonnet release cable | 53630-0D011 | 1 |
Data: Motorwise Workshop. Bulletin 5.
Glossary
Technical terms used in this guide.
- ABS
- Anti-lock braking system — stops the wheels locking under hard braking
- CMP
- Camshaft position — a sensor that tells the engine control module where the camshaft is
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Fault Memory
- The list of stored trouble codes in a control module
- 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 Yaris 1.5?
This guide contains six workshop bulletins for the Toyota Yaris 1.5. Of these, two concern the brakes and two the body and trim. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Yaris 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 Yaris 1.5 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.