Symptoms of a Bad or Failing EGR Temperature Sensor

Do you know how your car’s EGR (exhaust gas recirculation) system works? If not, all contemporary cars have this. This system’s goal is to significantly minimize the pollution your car emits. Having said that, the system is made up of a variety of parts, each of which serves a crucial purpose. One such component that is a part of the system is the EGR temperature sensor, which is in charge of keeping track of the temperature of the exhaust gas. The gases entering the EGR valve are specifically those. The EGR tube itself houses the temperature sensor, making it the perfect location to keep an eye on the readings.egr temperature sensor

Failure of the emissions test and other problems may result when the sensor malfunctions or has any other faults. The typical signs of a malfunctioning or failed EGR temperature sensor include a few indications that can notify the driver of a possible problem that needs to be looked at.

Well, in this article, you will get to know the symptoms of a Bad or Failing EGR Temperature Sensor.

Ok, let’s get started!


Symptoms of a Bad or Failing EGR Temperature Sensor

The following are the most common symptoms of a bad or failing EGR temperature Sensor:

  • Noises from the Engine
  • The Check Engine light illuminates
  • Failed Emissions Test

Noises from the Engine

Engine ping or knocking is one of the initial signs frequently linked to a defective or failed EGR temperature sensor. A problem with the EGR system flow will result from a broken EGR temperature sensor. As a result, cylinder temperatures may increase, which may result in engine pinging or knocking.

Engine ping or knock is a sign that there is a problem with combustion and will sound like a metallic rattling sound coming from the engine room. Engine knocking or pinging should always be attended to as quickly as possible since, if left unattended, it can lead to catastrophic engine damage.

The Check Engine light illuminates

A Check Engine Light is another sign of a damaged or failed EGR temperature sensor. The Check Engine Light will turn on to alert the driver if the engine’s computer notices a problem with the sensor circuit or signal. The Check Engine Light can also be triggered by a broad range of other problems, thus it’s highly advised to have the vehicle’s trouble codes examined.

Failed Emissions Test

Another sign of a problem with the EGR temperature sensor is a failed emissions test. Occasionally, a sensor failure or incorrect reading might result in a malfunction of the EGR system without turning on the check engine light. In states with tight pollution rules, this may result in the car failing an emissions test.

Any difficulties with the EGR temperature sensor, a crucial part of the EGR system, can cause catastrophic damage and emissions concerns. Have the car evaluated by a qualified technician to see whether the temperature sensor needs to be changed if you feel that your EGR system or temperature sensor may be experiencing a problem.

How Long Does an EGR Temperature Sensor Last?egr temperature sensor

Manufacturers design this temperature sensor to endure the lifespan of your car, however, occasionally things can go wrong and the component will break. The EGR temperature sensor is crucial in ensuring that your car emits the right quantity of emissions. Despite the fact that the part is intended to last the entire life of your car, this isn’t always the case. Get a diagnostic or schedule an EGR temperature sensor replacement service with a licensed mechanic if you’re noticing any of the aforementioned symptoms and think your EGR temperature sensor needs to be replaced.

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What does the EGR temperature sensor do?

To regulate the flow of exhaust gases through the EGR system and back into the engine, the EGR temperature sensor and EGR vacuum solenoid operate together. The EGR temperature sensor, as its name suggests, measures temperature and transmits the information to your car’s onboard computer.

Where is the EGR temperature sensor?

What are the symptoms of a bad EGR position sensor?

EGR valve symptoms can vary, but the following list explores the most typical signs of a bad EGR valve:

  • Your engine idles unevenly.
  • Your car’s performance is subpar.
  • You have raised your fuel usage.
  • When idle, your car frequently stalls.
  • Fuel is detectable.
  • Engine management remains illuminated.

Does EGR affect engine temperature?

EGR decreases the temperature rise for the same heat release in the combustion chamber because it raises the heat capacity (specific heat) of the intake charge. %EGR = volume of EGR total intake charge into the cylinder 100. EGR has a considerably greater specific heat than fresh air.

Can block EGR cause overheating?

Engine overheating: The EGR cooler is unable to cool the exhaust gases if the coolant flow is restricted. In addition to allowing NOx emissions to continue, this leads to overheating, which can seriously harm the system.

What are the symptoms of a faulty temperature sensor?

The following are the main signs of a failing coolant temperature sensor:

  • Engine overheating.
  • The check engine light is on.
  • Black smoke coming from the exhaust.
  • Problems starting the car.
  • Temperature Gauge That Changes.
  • Rough Idling.
  • Radiator Fan Issues.
  • Issues With the Transmission Shifting.

Does EGR save fuel?

To lower emissions, boost efficiency, and cut fuel usage, an EGR valve recirculates a precise volume of exhaust gas into the engine intake system.

Read more: How to Clean a Mass Air Flow Sensor

Can a faulty EGR cause high fuel consumption?

To cut exhaust emissions, the EGR valve alternates between being open and closed in response to throttle action and intake manifold vacuum. Due to carbon buildup and heat distortion, if it sticks open, a vacuum leak and sluggish operation result. The fuel economy will suffer as a result.

Can an EGR cause engine failure?

Numerous issues could arise if the jammed EGR valve is not swiftly fixed or replaced. The four most frequent ones are rough running, excessive fuel use, turbocharger failure, and even complete engine failure.

Does removing EGR increase power?

The engine’s oxygen density rises when an EGR delete operates effectively. That indicates an increase in horsepower. But it’s important to think about how much of an increase you actually receive. Typically, it is not much.

What happens if the EGR valve is blocked?

How does a clogged EGR valve affect the system? In addition to increasing smoke emissions, this kind of failure causes the engine to lose a substantial amount of power and causes jerks or complicated cold starts. The EGR valve cannot reduce emissions if it is closed.

Which sensor is responsible for fuel consumption?

Using the O2 sensor, the computer can determine if the fuel mixture is burning lean (too much oxygen) or rich (insufficient oxygen). Knowing the fuel-to-air ratio enables the engine of your car to make any required adjustments to ensure that it runs as it should.

That concludes this article, in which we discussed  Symptoms of a Bad or Failing EGR Temperature Sensor. Hope it was helpful. If so, kindly share it with others. Thanks for reading; see you around!