When the check engine light comes on in your Land Rover, it’s a signal that something within the vehicle’s complex systems isn’t working properly. While the light itself doesn’t pinpoint the exact issue, there are several common reasons it may illuminate. Land Rovers, known for their performance and luxury, rely heavily on advanced electronics and sensors, which means even minor issues can trigger the warning. At The Rover Doctor Plus, we provide expert Land Rover check engine light diagnostics and repair in the greater Irvine area. Here are four common reasons why the check engine light might come on in your Land Rover.

Faulty Oxygen Sensors

One of the most frequent causes of a check engine light in Land Rovers is a failing oxygen sensor. This sensor monitors the level of oxygen in the exhaust and helps regulate the air-fuel mixture. If it starts to fail, the engine may run too rich or too lean, leading to reduced fuel economy and increased emissions. Left unaddressed, a faulty oxygen sensor can also cause problems with the catalytic converter, resulting in even more expensive repairs.

Mass Air Flow Sensor Issues

The mass air flow (MAF) sensor is responsible for measuring the amount of air entering the engine so the proper fuel-to-air ratio can be delivered. If the sensor is dirty or malfunctioning, it can throw off the engine’s performance. Land Rovers can be very sensitive to issues with airflow sensors, and a problem here can lead to rough idling, stalling, or poor acceleration—all accompanied by the check engine light.

Failing Ignition Coils or Spark Plugs

Ignition system problems are another frequent reason for the check engine light to come on. In Land Rovers, worn spark plugs or faulty ignition coils can lead to misfires, rough performance, and reduced fuel-efficiency. These components are responsible for igniting the fuel in the engine’s cylinders. When they don’t function correctly, the engine can run unevenly.

Catalytic Converter Problems

The catalytic converter helps reduce harmful emissions by converting toxic gases into safer byproducts. Over time, it can become clogged or fail, especially if other issues like bad oxygen sensors go unaddressed. A failing catalytic converter will often result in poor engine performance and increased emissions.

Land Rover Repair in Irvine, CA

For expert Land Rover repair in Irvine, CA and the surrounding area, contact The Rover Doctor Plus at (949) 462-0648. Feel free to give us a call to schedule an appointment!