Engine & fuel system
1 documented fault — symptoms, causes and workshop fixes.
Engine oil leak from oil pressure warning lamp switch
Cause
Frequent engine starts at low ambient air temperatures cause damage to oil pressure warning lamp switch.
Repair
- Fit modified oil pressure warning lamp switch.
Data: Motorwise Workshop. Bulletin 1.
Suspension & drivetrain
2 documented faults — symptoms, causes and workshop fixes.
Noise from front suspension when driving over rough roads or speed humps in wet weather conditions
Overview
- Affects
- All models, →2016.
- Remedy
- Fit modified part
- Parts
- 1 part
Repair
- Fit modified front suspension lower arm front bush.
- Repeat procedure for opposite side.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Suspension lower arm bush | TK48-34-470 | 2 |
Data: Motorwise Workshop. Bulletin 2.
Knocking noise from rear suspension when driving over speed humps
Cause
Rear shock absorber bump stop faulty.
Repair
- Fit new rear shock absorber bump stop(s) as required.
Data: Motorwise Workshop. Bulletin 3.
Air conditioning & heating
1 documented fault — symptoms, causes and workshop fixes.
Air conditioning (AC) inefficient
Cause
Refrigerant leak from AC evaporator due to poor manufacture.
Repair
- Fit modified AC evaporator.
Parts2 parts
| Part | Part number | Qty |
|---|---|---|
| AC evaporator (except CX-5) | GJE8-61-J10A | 1 |
| AC evaporator (CX-5) | KD77-61-J10A | 1 |
Data: Motorwise Workshop. Bulletin 4.
Glossary
Technical terms used in this guide.
- AC
- Air conditioning — the system that cools the cabin
- Refrigerant
- The gas/liquid that carries heat in the air-conditioning system
- Bush
- A rubber mounting that lets a suspension or body joint move without metal-to-metal contact
- Evaporator
- The air-conditioning heat exchanger in the dashboard that cools the cabin air
- Lower Arm
- A suspension link that locates the wheel at the bottom of the hub
Frequently asked questions
What are the common faults with the Mazda 3 1.5?
This guide contains four workshop bulletins for the Mazda 3 1.5. Of these, two concern the suspension and drivetrain and one the engine and fuel system. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Mazda 3 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 Mazda 3 1.5 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.