What does a EGR temp sensor do?

The EGR temperature sensor is an engine management sensor that is part of the EGR system. It works together with the EGR solenoid to control the flow of the EGR system. The sensor is installed in between the exhaust and intake manifold, and monitors the temperature of the exhaust gases.

Can a faulty exhaust temperature sensor symptoms?

A faulty exhaust gas temperature sensor can negatively affect a vehicle’s after-treatment system, resulting in the following symptoms: Check engine light: if the ECU detects a problem with the sensor or signal, it will trigger the check engine light to come on.

Can bad EGR valve cause backfire?

A defective positive crankcase ventilation (PCV) valve or a malfunctioning exhaust gas recirculation (EGR) valve also can cause a backfire.

What are the symptoms of a bad EGR temperature sensor?

One of the first symptoms commonly associated with a bad or failing EGR temperature sensor is engine ping or knock. If the EGR temperature sensor malfunctions it will cause issue with the EGR system flow. This can cause cylinder temperatures to rise, which can cause engine ping or knock.

What causes engine ping or knock when EGR sensor fails?

If the EGR temperature sensor malfunctions it will cause issue with the EGR system flow. This can cause cylinder temperatures to rise, which can cause engine ping or knock. Engine ping or knock will sound like a metallic rattling sound coming from the engine bay, and is an indicator that there is a problem with the combustion process.

How much does it cost to replace an EGR temperature sensor?

Once you have connected the electrical connector, reconnect the negative terminal of the battery and start the engine. It is recommended that you start the engine and drive for a while once the replacement procedure is done. The average EGR temperature sensor replacement cost is between $190 and $260.

How do you clean the EGR sensor on a Toyota Corolla?

The best way to clean the EGR temperature sensor is with a clean and dry cloth. Avoid using any harsh chemical as it can damage the sensor. If the sensor is still not fixed after cleaning, we recommend that you replace it with a new one.