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.
Diagnostic Method
Communication Status with Hybrid vehicle control ECU assembly is invalid or Communication Status with ECM Valid to Invalid edge is detected.
| Malfunction Criteria | Threshold Value |
|---|---|
| Case 1 Communication Status with Hybrid vehicle control ECU assembly |
Invalid |
| Case 2 (Communication Status with ECM Valid to Invalid edge |
Detected |
| for time) | 5.00 sec or more |
Time needed for diagnosis:
- Case 1: 2 s
- Case 2: 60 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
NO RELATED
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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.