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89661-5C310 / 212000-1510 Toyota Sienta Engine Control Unit ECU Genuine OEM.
Description:
The Toyota Sienta Engine Control Unit (ECU) with part numbers 89661-5C310 and 212000-1510 is a genuine OEM module designed to manage and optimize the engine’s performance. It regulates fuel injection, ignition timing, air–fuel ratio, and emissions, ensuring smooth driving, fuel efficiency, and compliance with Toyota factory standards.
If this ECU fails, symptoms may include poor fuel economy, difficulty starting, stalling, or the check engine light appearing on the dashboard. Replacing it with the correct OEM ECU restores proper communication between the engine and vehicle systems, ensuring reliable operation.
Compatibility Table:
Make | Model | Year Range | Engine Type | Notes |
---|---|---|---|---|
Toyota | Sienta | 2003–2010 | Petrol | Fits select trims – confirm part number & VIN before purchase |
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