Emergency sensors in the car

Each car is packed with sensors that are a source of data necessary to ensure proper engine operation or an appropriate level of safety. Which of them most often fail and with what repair costs should you be reckoned with?

Sensors in the intake manifold – sensitive to air quality

All sensors occurring in the intake manifold can be considered quite an emergency because their consumption is affected by low air quality. This is mainly due to the use of filters of poor quality and sports cone-shaped products. Negative impacts also show leakages in the intake system or negligence in the regular exchange of filters. It is worth remembering to carry out periodical reviews and selection of filtering products from branded manufacturers. These can include parts manufactured by Bosch, Knecht, and Filtron.


Among the sensors placed in the intake manifold, one can mention primarily the flowmeter, as well as the sensor of the boost pressure and the temperature of the sucked air, which occurs in some designs. Each of them will be exposed to a greater or lesser extent to pollution due to inadequate filtration.However, the occurrence of the first symptoms of sensor damage will not always mean that they need to be replaced. In many cases, it helps to unscrew and clean the components directly responsible for the measurement.


Lambda sensor – surrounded by hot exhaust gases

The lambda probe is located in the exhaust manifold, and its function is related to the examination of the exhaust composition. Thanks to the information provided to the engine control computer, it is possible to match such proportions of the air-fuel mixture so that combustion takes place in the most effective way.


Lambda probe, on the one hand, must withstand high temperatures of gases removed from the cylinder, on the other hand, it is exposed to mechanical damage. Its housing protrudes beyond the exhaust. Probe faults usually show a significant increase in fuel consumption. Repair often boils down to replacing an item with a new one, which involves a cost of 100-200 pounds.