Engine & fuel system
1 documented fault — symptoms, causes and workshop fixes.
Lack of power
Overview
- Affects
- All models with petrol engines, →04/16.
- Fault codes
P0300P0301P0302P0303P0304- Remedy
- Fit modified part
- Parts
- 1 part
Symptoms
Engine malfunction indicator lamp (MIL) illuminated. Trouble codes stored: P0300, P0301, P0302, P0303, P0304. Erratic idle.
Cause
Faulty ignition coil(s). Note: This fault is only associated with ignition coils made by Yumebishi.
Repair
- Check ignition coil(s) for damage and/or high resistance.
- Fit modified ignition coils as necessary.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Ignition coil | PE20-18-100A | As required |
Data: Motorwise Workshop. Bulletin 5.
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 1.
Vibration through vehicle whilst driving, more noticeable at 25-30mph (40-50kph)
Cause
Excessive wear in front driveshaft inner joint due to poor material characteristics.
Repair
- Fit modified front driveshaft inner joint.
Data: Motorwise Workshop. Bulletin 4.
Clutch & gearbox
2 documented faults — symptoms, causes and workshop fixes.
Central locking not operating
Symptoms
Audio unit remains on after ignition key removed.
Cause
Transmission park position not recognised due to faulty park position switch.
Repair
- Fit new park position switch.
Data: Motorwise Workshop. Bulletin 2.
Whining noise from transmission when driving above 10mph (16kph)
Cause
Poor manufacture of transmission housing.
Repair
- Transmission requires reconditioning or replacing.
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 6.
Glossary
Technical terms used in this guide.
- MIL
- Malfunction indicator lamp — the engine warning light on the dashboard
- Trouble Codes
- Standardised fault codes stored by the engine control module, read with a diagnostic tool
- AC
- Air conditioning — the system that cools the cabin
- Driveshaft
- The shaft that takes drive from the differential out to a wheel
- 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 CX-5 2.5?
This guide contains six workshop bulletins for the Mazda CX-5 2.5. Of these, two concern the suspension and drivetrain and two the clutch and gearbox. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Mazda CX-5 2.5 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 CX-5 2.5 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.