How do you change a EGR sensor?

Asked By: Yamandu Mustapha | Last Updated: 16th February, 2020
Category: automotive auto repair
4.7/5 (94 Views . 25 Votes)
In order to safely and efficiently replace your EGR temperature sensor you need a couple of basic tools:
  1. Materials Needed.
  2. Step 1: Locate the EGR temperature sensor.
  3. Step 1: Disconnect the negative battery cable.
  4. Step 2: Remove the electrical connector.
  5. Step 3: Unscrew the sensor.
  6. Step 1: Put in the new sensor.

Click to see full answer


Herein, how much does it cost to replace the EGR sensor?

Having the EGR valve replaced on your car should cost between $147 to $548, which will cover the cost of parts an labor. You can pick up the valve itself for anywhere between $70 and $490, depending on the type of car you own and what part you buy.

Beside above, how long does it take to change a EGR valve? In order to replace the EGR tube it can be replaced in less than an hour. The tube may not be the only issue though and the intake manifold EGR ports may be clogged and need the intake manifold to be removed and the ports in the engine cylinders to be cleaned out.

Simply so, can I replace my EGR valve myself?

Hi there. It really depends on what the problem is with the vehicle. If there is an EGR code then some of the time the EGR can be cleaned, but most of the time it will need to be replaced. If you do this yourself you just need to be really careful not to get any of the carbon in the engine.

What happens if you don't replace EGR valve?

A clogged or malfunctioning EGR valve can disrupt the vehicle's air-fuel ratio, which can cause engine performance issues such as a reduction in power and fuel efficiency. The vehicle may also stall or hesitate while accelerating.

32 Related Question Answers Found

Can you drive a car with a faulty EGR valve?

I'm seeing conflicting advice online about the risks of driving with a faulty EGR valve. What I've pieced together is that it is probably OK but there is some risk of significant damage if the valve fails in an open position. If the valve failed open you'd know it. The car would run rough or be close to stalling.

How hard is it to replace an EGR valve?

In most models, replacing an exhaust gas recirculation (EGR) valve is not difficult. You can do it in your garage in about an hour or two, depending on your particular system, using some common tools and a good solvent like carburetor cleaner.

What are the symptoms of a bad EGR pressure sensor?

As with any EGR issue, the most common symptoms noticed when the exhaust gas recirculation pressure feedback sensor fails are rough idling, hesitation accelerating from a stop, lack of engine power, misfires, and, of course, illumination of the dreaded check engine light.

Can I clean my EGR valve?

To Clean A Mechanical EGR Valve. Clean and inspect the vacuum hose. Remove the vacuum hose and inspect closely for wear (cracks or weak spots), then clean out the carbon deposits either with a spray can of carburetor cleaner or with a pipe cleaner if the deposits are hardened or compacted.

Where is the EGR sensor located?


The EGR temperature sensor is usually mounted in the exhaust manifold or mounted near the EGR valve.

How often should you replace your EGR valve?

Typically if your vehicle has been made in the last two decades, it is outfitted with an EGR valve. While there is no set mileage that it should be replaced, it is important to check that it is in good working order. It is suggested that every 50,000 miles you have a carbon cleaning done, which is an air induction.

What happens if you disconnect EGR valve?

If the EGR valve is clogged or completely blocked off it can longer re-burn harmful emissions in the combustion chamber. The NOx emissions will flow unregulated through the combustion chamber and out of the exhaust pipe. The excessive NOx emissions will show up during a smog test and cause a failure.

How do you diagnose a bad EGR valve?

What are the symptoms of a failing EGR valve?
  1. Your engine has a rough idle.
  2. Your car has poor performance.
  3. You have increased fuel consumption.
  4. Your car frequently stalls when idling.
  5. You can smell fuel.
  6. Your engine management light stays on.
  7. Your car produces more emissions.
  8. You hear knocking noises coming from the engine.

Will a bad EGR valve cause a car not to start?

When the EGR valve is clogged or dirty, as they are prone to, it may not function properly causing the engine idle rough, stall at idle speeds, cause the car to get poor fuel mileage, or emit a strong smell of fuel due to excess hydrocarbons which also results in failing emissions tests.

What is a EGR sensor?


The EGR system works by recirculating exhaust gases back into the engine in order to lower cylinder temperatures and NOx emissions. The EGR pressure feedback sensor, also known as the delta pressure feedback sensor, is a sensor that detects the pressure changes in the EGR system.

What are the symptoms of a failing EGR valve?

Rough idle
One of the most common symptoms of a problem with the vehicle's EGR valve is a rough idle. It is not uncommon for EGR valves to malfunction and become stuck in the open position. This can lead to exhaust gas recirculation to occur causing a rough idle even when the conditions are not desirable.

How do I know if my EGR valve is bad?

Symptoms of a bad EGR valve include:
  1. rough idling or stalling.
  2. a smell of fuel.
  3. increased fuel consumption.
  4. pinging, tapping, or knocking sounds.
  5. failed smog test.
  6. Check Engine Light on.

What causes an EGR valve to go bad?

The most common problem with an EGR valve is when carbon build up on the valve cause it to stick (see the photo below). In worst cases, an EGR valve and the EGR passages can be completely clogged up. If the EGR system is clogged up, or the valve is stuck closed, the combustion temperature increases.

Do you have to program a new EGR valve?

No they don't require programming. Provided you have fitted the correct EGR and the wiring was ok you can reset the EGR adaptive values or programming values using the clip but this wouldn't stop it from working.

What can trigger an EGR code?


Causes of Code P0401
  • Clogged or restricted EGR passages due to excess carbon.
  • Faulty EGR valve.
  • EGR temperature sensor is covered with carbon.

Is deleting EGR illegal?

An EGR delete is NOT the end all solution that most claim it to be. An EGR delete is ILLEGAL in ALL 50 STATES. All vehicles are required to meet federal emissions standards. The penalty for an emissions component alteration can be in the thousands of dollars.

Is EGR cleaning necessary?

Since the EGR system recirculates a portion of exhaust gases, over time the valve can become clogged with carbon deposits that prevent it from operating properly. Clogged EGR valves can sometimes be cleaned, but replacement is necessary if the valve is faulty.