EGR Valve Temperature Sensor Replacement Cost Estimate

When diagnosing the EGR valve temperature sensor, the connector will be probed for reference voltage at the sensor, and the signal voltage will be checked for change to temperature. Alternatively, the sensor could be removed from the EGR system, and resistance across the sensor could be monitored as the sensor is heated and cooled. It is important to understand that a sticking or leaking EGR valve can cause the sensor to appear to work incorrectly, so operation of the EGR valve will be checked also.

Replacement tents to require removing one electrical connector before detaching the sensor. Installation is the reverse of removal, and any seals should be replaced.

These sensors may cease functioning properly due to carbon buildup. It is not advised to clean them with harsh chemicals or wire brushes. Returned failure is likely after decarbonizing the sensor, and leaks from the sensor are more likely. It is always the best practice to replace this sensor when coated with carbon.

Many manufacturers have different forms of soliciting feedback from the EGR system. This being the case, it is important to understand the type of EGR feedback component used on the vehicle being serviced. Also, the EGR system is nearly as hot as the exhaust system, especially if the engine has been running under heavy load or high engine speed. Wait at least thirty minutes to one hour before servicing the system, or just ensure the portion you are servicing is cool to the touch before proceeding.

This is not a difficult diagnosis or replacement. As long as the EGR system and computerized automotive circuits are understood, this can be done by anyone with a multimeter and a little time to spare. Ensuring proper workplace safety is vital, especially when working with a hot system, and the DIY mechanic should understand the specific range of voltage the EGR valve temperature sensor may send or receive.