Erratic engine behavior, such as stalling or rough idling
Check engine light illuminating for unknown reasons
Difficulty starting the vehicle or poor fuel efficiency

If you encounter any of these issues, it is crucial to address them.

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The ECU monitors various sensors in the engine to adjust fuel delivery and ignition Camshaft Timing Control for optimal performance.
The PCM coordinates communication between the engine and transmission, ensuring smooth shifts and efficient power delivery.

In conclusion, ECU, PCM, and ECM are essential components of your vehicle's Powertrain Control Module system, ensuring smooth operation and optimal performance.