Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Mazda 6 L4-2.3LFACTORY OEM SERVICE PROCEDURE
Powertrain Management: Technical Service Bulletins
- Recalls
- Customer Interest
- Emissions - MIL ON/DTC's P0441/P0442/P0455/P0456 Set
- Engine Controls - MIL ON/DTC P0106 Set
- Ignition System - MIL ON/DTC P0300-P0304 Set
- Emissions - Certain OBD WDS Test Modes Inoperative
- Engine Controls - MIL ON, DTC P0335, No Start
- Engine Controls - Surge While Cruising at 40 - 50 Mph
- Emissions - MIL ON, DTC P2227 Set
- Engine Controls - False MIL ON/False 'U' Codes Set
- Engine Controls - RPM Fluctuation During A/T Shifts
- Engine Controls - Rough Idle/Hesitation/DTC P0300 Set
- Fuel System - Hesitation at High Altitude
- A/T - Hard 1-2 Upshift During Warm-Up
- Engine - Unstable Idle/Engine Stalling
- Exhaust System - Rubbing Noise At Idle
- Engine - VVT Noise At Engine Start Up
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Emissions - MIL ON/DTC's P0441/P0442/P0455/P0456 Set
- Engine Controls - MIL ON/DTC P0106 Set
- Ignition System - MIL ON/DTC P0300-P0304 Set
- Emissions - Certain OBD WDS Test Modes Inoperative
- Engine Controls - MIL ON, DTC P0335, No Start
- Engine Controls - Surge While Cruising at 40 - 50 Mph
- Emissions - MIL ON, DTC P2227 Set
- Engine Controls - False MIL ON/False 'U' Codes Set
- Engine Controls - RPM Fluctuation During A/T Shifts
- Engine Controls - Rough Idle/Hesitation/DTC P0300 Set
- Fuel System - Hesitation at High Altitude
- A/T - Hard 1-2 Upshift During Warm-Up
- Engine - Unstable Idle/Engine Stalling
- Exhaust System - Rubbing Noise At Idle
- Engine - VVT Noise At Engine Start Up
- Driveability
- False instrument warning light/gauges
- Hard Shifting
- Noise
- Odors
- Recalls
- Starting problems
- All Technical Service Bulletins
- Exhaust System - Excessive Sulfur Odors
- Fuel System - Fuel Ethanol Content Testing
- Computers/Controls KAM Memory Clearing After VVT R & R
- Fuel System - Ethanol Fuel Usage
- Electrical - Lightning Strike Information
- Campaign - Warranty Information Booklet Update
- Dealer Letter
- Model Year 2000 California Emission Control Warranty
- Model Year 2001 California Emission Control Warranty
- Model Year 2002 California Emission Control Warranty
- Model Year 2003 California Emission Control Warranty
- Model Year 2004 California Emission Control Warranty
- Model Year 2005 California Emission Control Warranty
- Model Year 2006 California Emission Control Warranty
- Model Year 2007 California Emission Control Warranty
- Model Year 2008 California Emission Control Warranty
- Model Year 2009 California Emission Control Warranty
- Reimbursement Plan
- Reimbursement Form
- Owner Letter
- Engine Controls - O2 Sensor Removal Precautions
- Emissions - MIL ON/DTC's P0441/P0442/P0455/P0456 Set
- Computers/Controls - Module Reprogramming Precautions
- Engine Controls - MIL ON/DTC P0106 Set
- Recall - Fuel Pump Lock Ring/Seal Potential Leakage
- Recall03V531000: Fuel Tank Leakage Potential
- Ignition System - MIL ON/DTC P0300-P0304 Set
- Recall - PCM/TCM Reprogramming for I/M Failure
- Emissions - Certain OBD WDS Test Modes Inoperative
- Engine Controls - MIL ON, DTC P0335, No Start
- Recall - PCM Reprogramming for MIL/DTC P2404
- Engine Controls - Surge While Cruising at 40 - 50 Mph
- Emissions - MIL ON, DTC P2227 Set
- Engine Controls - False MIL ON/False 'U' Codes Set
- Engine Controls - RPM Fluctuation During A/T Shifts
- Engine Controls - Rough Idle/Hesitation/DTC P0300 Set
- Fuel System - Hesitation at High Altitude
- Ignition System - Spark Plug Removal/Installation
- A/T - Hard 1-2 Upshift During Warm-Up
- A/T - Range Switch Removal/Installation Caution
- Engine Controls/Emissions - MIL ON/DTC's P2404/P0456
- Engine - Unstable Idle/Engine Stalling
- Exhaust System - Rubbing Noise At Idle
- Engine - VVT Noise At Engine Start Up
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.