Engine & fuel system
3 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 7.
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 12.
Electrical & ignition
5 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.
Seat belt warning buzzer and warning lamp on when passenger's seat is unoccupied
Cause
Faulty front passenger's seat occupation pressure sensor.
Repair
- Fit new front seat cushion, incorporating modified seat occupation pressure sensor.
Parts4 parts
| Part | Part number | Qty |
|---|---|---|
| Clip | KD45 88 585 | 2 |
| Seat adjustment lever (LHD) | KD45 88 1G5 02 | 1 |
| Seat adjustment lever (RHD) | KF61 88 1H5 02 | 1 |
| Front seat cushion | Refer to manufacturer | 1 |
Data: Motorwise Workshop. Bulletin 3.
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 4.
Lane change assist warning lamp illuminated with no obstructions present
Overview
- Affects
- All models with lane change assist, →09/13.
- Parts
- 2 parts
Cause
Lane change assist control module software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Renew both lane change assist control modules.
Parts2 parts
| Part | Part number | Qty |
|---|---|---|
| Lane change assist control module, LH | GHP9 67 Y90C | 1 |
| Lane change assist control module, RH | GHP9 67 Y80C | 1 |
Data: Motorwise Workshop. Bulletin 6.
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 9.
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 8.
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 11.
Clutch & gearbox
1 documented fault — symptoms, causes and workshop fixes.
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 10.
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 13.
Other
1 documented fault — symptoms, causes and workshop fixes.
Cruise control inoperative
Overview
- Affects
- All models with cruise control distance range control, 03/12/12-21/02/13.
- Remedy
- Fit new part
- Parts
- 1 part
Symptoms
Digital multifunction display shows 'Radar blocked'. Trouble code stored: C1A6792.
Cause
Cruise control distance range sensor faulty.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Fit new cruise control distance range sensor.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Cruise control distance range sensor | GHP9 67 XA1A | 1 |
Data: Motorwise Workshop. Bulletin 5.
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
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- 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
- Trouble Code
- A standardised fault code stored by a control module, read with a 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 6 2.0?
This guide contains 13 workshop bulletins for the Mazda 6 2.0. Of these, five concern the electrical and ignition and three the engine and fuel system. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Mazda 6 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 6 2.0 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.