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.
2012 Mazda 5 TouringFACTORY OEM SERVICE PROCEDURE
Check code 02
| Inspection item | Step | Inspection | Display | Action | |
|---|---|---|---|---|---|
| Unit communication error | Audio unit | 1 | Verify information display | CAN system to audio unit is normal. | |
| Audio unit communication error (DTC U0184:00) Go to Step 4. |
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| Vehicle without audio unit. | |||||
| Climate control unit | 2 | CAN system to climate control unit is normal. | |||
| Climate control unit communication error (DTC U0164:00) Go to Step 4. |
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| Vehicle without climate control unit. | |||||
| Instrument cluster | 3 | CAN system to instrument cluster is normal. | |||
| Instrument cluster communication error (DTC U0155:00) Go to the next step. |
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| - | 4 | Verify CAN system DTC. | - | Verify CAN system DTC. | |
Factory Service Tools
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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.