Symptoms of a Faulty or Faulty Nozzle Control Pressure Sensor

Common symptoms include starting problems, engine misfiring, Check Engine light on, and reduced power, acceleration, and fuel economy.

The injector control pressure sensor is an engine control component commonly used in diesel engines. As the name suggests, this is an electronic sensor that monitors the pressure of the fuel delivered to the injectors. Diesel engines require a particularly fine fuel mixture because they rely on pressure and temperature to ignite the fuel mixture rather than a spark. The injector control pressure sensor detects the pressure of the fuel delivered to the injectors and sends this signal to the computer so it can adjust it for optimum performance and efficiency. When there is a problem with this sensor, the signal can be compromised, which can lead to vehicle performance issues.

1. Starting problems

One of the first symptoms of a possible problem with the injector control pressure sensor is trouble starting the engine. Diesel engines do not have spark ignition systems, so a precisely matched fuel mixture is required for proper ignition. If the control pressure sensor has any problems, the computer signal to the injectors may be reset, which can lead to problems when starting the engine. The engine may require more starts than normal or several turns of the key before it starts.

2. Engine misfiring and reduced power, acceleration and fuel economy.

Another sign of a possible problem with the injector control pressure sensor is engine running problems. A faulty sensor can reset the fuel mixture and cause engine misfiring, loss of power and acceleration, loss of fuel economy, and in some cases even stalling. Similar symptoms can also be caused by other problems, so it's a good idea to get a proper diagnosis to be sure of the problem.

3. Check Engine light comes on.

A glowing Check Engine light is another sign of a potential problem with the vehicle's injector control pressure sensor. If the computer detects a problem with the injector pressure sensor or control circuit, it will illuminate the Check Engine light to notify the driver of the problem. A lit Check Engine light can also be caused by a number of other issues, so it's highly recommended that you scan your computer for trouble codes.

Injector control pressure sensors are more common on diesel engines, however, they can also be found on vehicles equipped with gasoline engines. If you suspect you may have a problem with the injector control pressure sensor, have your vehicle checked by a professional technician such as AvtoTachki to determine if the sensor should be replaced.