The exhaust gas recirculation (EGR) temperature sensor is an important component the monitors the EGR gas temperature and also sends the wanted information come the car’s onboard computer system.

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Any problem with the EGR temperature sensor can cause damage to the EGR system and as a result, your car may failure to pass the emissions test.


This EGR valve is controlled through one EGR temperature sensor. The sensor collects an essential information and, based upon this information, the EGR valve determines as soon as to open and also close.

When the EGR temperature sensor fails, it reasons various worries with the EGR system and the instance should be handle quickly. In this article, we will discuss some that the symptoms the you will certainly face due to the fact that of a negative EGR temperature sensor.

1. Check Engine light Illuminates

The first symptom friend will notification is that the check engine irradiate illuminates. Any kind of problem v the engine or sensor reasons the check engine light to illuminate indicating that the auto should it is in taken because that diagnosis.

2. Knocking Sound indigenous Engine

One of the very first problems friend will notice is the the engine starts do a knocking sound. A faulty EGR temperature sensor will certainly disturb the circulation of the EGR system, bring about the cylinder temperature come increase. This increase in temperature produce a monster sound that can be heard close to the engine bay.

If friend hear such noise, it way that over there is some type of difficulty with the combustion process and it must be fixed ideal away. Delaying the problem for too long can reason complete engine failure.

3. Automobile Fails to happen Emission Test

If your car’s EGR temperature sensor is faulty, it will certainly fail the emission test. A faulty sensor may provide a false analysis to the ECU and also as a result, the EGR device will crash. If your auto fails the emissions test, you are violating the law, so it is a an excellent idea to acquire your car diagnosed immediately.

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Why is the Exhaust Gas Recirculation Important?

Modern vehicles space equipped through an exhaust gas recirculation mechanism that is tasked with routing the gas from the exhaust to intake, to reduce the burning temperature in the engine. The reduced combustion temperature helps in minimizing the NOx emission and prevents the engine native making a knocking sound.

However, the gas recirculating process is not always required. For instance, as soon as the engine is idle, the combustion temperature is currently low and there is no need for exhaust gas. To manage this, the EGR valve is existing which opens and also closes when required.

Replacing the EGR Temperature Sensor

We imply that you take your vehicle to a experienced mechanic if your vehicle requires EGR temperature sensor replacement, however, if you have some suffer in diagnosing auto-related problems, you deserve to perform the replacement procedure at house as well.

Tools Needed:• safety Gloves• safety and security Glasses• Ratchet/Socket Wrench

Step 1: find the EGR Temperature Sensor

To find the EGR temperature sensor, open up the hood of your car. The EGR temperature sensor deserve to be discovered in the exhaust manifold or close to the EGR valve.

Step 2: Disconnect the Battery

To safeguard yourself indigenous getting any kind of electric shock, that is crucial that girlfriend disconnect the automobile battery. Find the negative terminal the the battery and disconnect it.

Step 3: Remove electric Connector

After remove the battery, disconnect the electrical connector.

Step 4: Unscrew the Sensor

Once the electrical connector is removed, unscrew the EGR temperature sensor using a socket wrench or a ratchet. Make sure you turn gently in order to avoid damage to any adjacent component.

Step 5: installation the brand-new Sensor

After remove the old sensor, mountain the brand-new sensor and also screw tightly. Reconnect the electric connector as soon as the sensor is installed.

Step 6: Reconnect the negative Battery Terminal

Once friend have associated the electric connector, reconnect the an unfavorable terminal of the battery and also start the engine. The is recommended that you start the engine and drive because that a while once the replacement procedure is done.

EGR Temperature Sensor replacement Cost

The median EGR temperature sensor replacement expense is between $190 and $260. The labor price is between $30 and $80, while the component itself costs in between $150 and also $200.

A common EGR temperature sensor should last a lifetime yet it does sometimes obtain damaged, mainly because of carbon buildup, or extreme and an extensive exposure to heat and carbon, but additionally if the automobile has experienced continuous temperature fluctuation. If the sensor becomes faulty, us recommend the you additionally get the EGR system checked as well.

The pricing usually relies on the auto model and also make. Moreover, every auto fix shop has various pricing so it is recommended the you do some market research before choosing the ideal one. The main dealers normally charge extra whereas the regional mechanics room comparatively cheaper.

If you wish to save on costs, you deserve to order the components yourself from online retailers and only pay your mechanic the labor cost.

Cleaning the EGR Temperature Sensor

Before instead of the EGR temperature sensor, the is a an excellent idea to clean and service the sensor to view if the issue resolves. Most of the time, because of carbon buildup, the sensor sends incorrect info causing the EGR device to malfunction.

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The best way to clean the EGR temperature sensor is through a clean and also dry cloth. Stop using any type of harsh chemical as it can damages the sensor. If the sensor is tho not fixed after cleaning, us recommend the you change it v a brand-new one.