Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing EGR Temperature Sensor

egr temperature sensor

Bad or Failing EGR Temperature Sensor Inspection

by a top-rated mechanic at your home or office

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. When the temperature rises, the EGR temperature sensor will send a signal to the computer that will increase the flow in order to reduce pressure and temperature of the system.

When the sensor fails or has any issues it can cause problems with the EGR system, which can lead to failed emissions test and other issues. Usually a bad or failing EGR temperature sensor will produce a few symptoms that can alert the driver of a potential issue that should be inspected.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

1. Engine ping or knock

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. 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. Any problem that results in engine ping or knock should be tended to as soon as possible, as engine knock can cause serious engine damage if left unchecked.

2. Check Engine Light comes on

Another symptom of a bad or failing EGR temperature sensor is a Check Engine Light. If the computer detects a problem with the sensor circuit or signal, it will set off the Check Engine Light in order to notify the driver of the issue. The Check Engine Light can also be set off by a wide variety of other issues, so having the vehicle scanned for trouble codes is highly recommended.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

3. Failed emissions test

A failed emissions test is another symptom of a problem with the EGR temperature sensor. There can be instances where the sensor can fail or give a false reading and cause the EGR system to malfunction, without setting off the Check Engine Light. This can cause the vehicle to fail an emissions test, which can be an issue for states with strict emission regulations.

The EGR temperature sensor is an important component of the EGR system and any issues with it can lead to emissions problems and even serious damage. If you suspect that your EGR system, or temperature sensor may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if sensor should be replaced.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: What Emissions Tests Are Performed on My Car?

The actual emissions testing process varies considerably from one state to another, as well as with different vehicles. However, your OBD system will definitely be checked. You may also need a tailpipe test, a gas cap test, and a visual...

Q: The Adaptive stability control went out on my car I took it to a local mechanic he said he thinks the throttle is going bad he unh

Unfortunately, the cause of your concern cannot be determined without visual inspection and further testing. While it is possible that your throttle position sensor may be faulty, it is more than likely that it could be a wheel speed sensor...

Q: If cylinder 3 misfires is that a bad thing?

Hi there. A misfiring cylinder can be expensive if allowed to continue. The catalytic converter can be damaged. If the cylinder is misfiring, the coil, wire, and/or spark plug could be the cause. First swap the spark plug between cylinder...