Engine & fuel system
4 documented faults — symptoms, causes and workshop fixes.
Engine malfunction indicator lamp (MIL) illuminated. Possible trouble code(s) stored: P008800, P019100
Overview
- Affects
- All models with petrol engines, →11/13.
- Remedy
- Fit new part
- Parts
- 5 parts
Cause
Unsatisfactory design of high-pressure fuel pump causing pressure fluctuations.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Fit new high-pressure fuel pump and associated parts.
Parts5 parts
| Part | Part number | Qty |
|---|---|---|
| High-pressure fuel pump | PE18 50 3FO | 1 |
| Fuel pipe - 1,5 | P501 13 290 | 1 |
| Fuel pipe - 2,0 | PE01 13 290D | 1 |
| Fuel pipe - 2,5 | PY01 13 290A | 1 |
| Seal ring | PE01 13 555 | 1 |
Data: Motorwise Workshop. Bulletin 2.
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 4.
Engine malfunction indicator lamp (MIL) illuminated. Trouble code stored: P2096
Overview
- Affects
- All models with petrol engines.
- Fault codes
P2096- Remedy
- Software update
Cause
Engine control module (ECM) software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program ECM with upgraded software.
Data: Motorwise Workshop. Bulletin 6.
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 8.
Electrical & ignition
3 documented faults — symptoms, causes and workshop fixes.
Failure of left or right headlamp
Overview
- Affects
- All models with gas discharge headlamps.
- Remedy
- Fit new part
Cause
Headlamp igniter unit not fitted correctly causing poor connection.
Repair
- Ensure headlamp igniter unit is disconnected from power supply.
- Fit new headlamp bulb and headlamp igniter unit. Turn headlamp igniter unit fully clockwise until it locks into position.
Data: Motorwise Workshop. Bulletin 1.
Retractable door mirrors inoperative
Overview
- Affects
- All models with electric door mirrors, →08/14.
- Remedy
- Fit modified part
Symptoms
Door windows cannot be operated from driver's door electric window switch assembly.
Cause
Driver's door electric window switch assembly internal damage due to voltage surge.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Fit modified driver's door electric window switch assembly.
Data: Motorwise Workshop. Bulletin 3.
Sunroof opens by itself
Condensation build up in sunroof switch causing short circuit. Fix: fit a modified part.
Overview
- Affects
- All models with sunroof, →02/12/14.
- Remedy
- Fit modified part
Repair steps
- Cut foam pad into 20 mm x 50 mm strip.
- Apply foam strip to sunroof wiring harness as shown.
- Fit modified front interior lamps assembly. Sunroof switch integral to front interior lamps assembly.
Parts
| Part | Part number | Qty |
|---|---|---|
| Front interior lamps assembly (models without alarm system) | KD47-69-970C 75 | 1 |
| Front interior lamps assembly (models with alarm system) | KD51-69-970C 75 | 1 |
| Foam pad | D6Y1-61-888 | 1 |
Data: Motorwise Workshop. Bulletin 7.
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 5.
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 9.
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 10.
Glossary
Technical terms used in this guide.
- MIL
- Malfunction indicator lamp — the engine warning light on the dashboard
- ECM
- Engine control module — the electronic unit that manages the engine
- 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
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Refrigerant
- The gas/liquid that carries heat in the air-conditioning system
- Re-Program
- Update the software on a control module using the manufacturer's diagnostic tool
- Wiring Harness
- The bundled cables that carry power and signals around the vehicle
- 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 2.0?
This guide contains 10 workshop bulletins for the Mazda 3 2.0. Of these, four concern the engine and fuel system and three the electrical and ignition. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Mazda 3 2.0 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 2.0 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.