Technicians see these scenarios frequently, and recognizing the pattern is the first step toward a quick resolution. Initial Checks You Can Perform Before heading back to the shop, there are a few safe checks you can conduct yourself.
Common Causes of Check Engine Light After Service
Additionally, using a filter that is incompatible or failing to seat properly can cause filter failure. When a mechanic lifts the vehicle to drain the oil or reaches into the engine bay, this sensor or its wiring harness can be inadvertently pulled out or knocked loose.
The oil change process involves moving components and fluids near these sensitive devices, creating opportunities for accidental disconnection or damage. Disconnected or Damaged Oil Level Sensor Engines often have an oil level sensor or dipstick switch that provides data to the ECU.
Common Causes of Check Engine Light After Service
While the oil pump is designed to purge this air, a bubble or a piece of filter media can momentarily disrupt the consistent flow of oil to the pressure switch. If it is not tightened to the manufacturer's precise specifications, it can lead to two problems.
More About Check engine light on after oil change
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