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Can a brake problem cause the service engine light to come on?

Yes, a brake problem can cause the service engine light to come on, although it's not the most common cause. This typically happens when the problem affects something the engine control module (ECM) monitors, such as:

* Brake Pressure Sensor Issues: Many modern vehicles have sensors that monitor brake fluid pressure. A faulty sensor, low brake fluid, or a leak in the system can trigger a diagnostic trouble code (DTC) related to brake pressure, resulting in the service engine light illuminating.

* Anti-lock Braking System (ABS) Problems: The ABS is electronically controlled. Malfunctions within the ABS system (sensors, pump, control module) often trigger the service engine light alongside the ABS warning light.

* Electronic Parking Brake (EPB) Malfunctions: Problems with an electronic parking brake system can also cause the service engine light to illuminate.

It's important to note that while a brake problem *can* cause the service engine light to come on, it's more likely to be accompanied by other warning lights, specifically the brake warning light or the ABS warning light. If the service engine light is on, it's crucial to get your vehicle diagnosed to determine the exact cause. Ignoring it could lead to more serious problems.

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