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Bad EGR Valve Symptoms and Replacement Cost

March 3, 2017 | Engine Info

Hello everyone, in this article we will discuss about one of the component in the engine system called EGR valve. So, we will explain about the basic functions, a bad symptoms, the average replacement cost and also the maintenance tips of EGR valve. Then, here we go…

EGR Valve Basic Functions

The purpose of an EGR valve is to improve your vehicle’s economy and performance. Not only that, but it also cuts down on emissions because it allows exhaust gasses to flow back through the cylinders to get burned again. The EGR valve even cuts down the emissions of nitrous oxide and allows the warmer exhaust to flow into the engine once again. As a result, the mixture of fuel and air won’t have to work so hard to maintain the operating temperature of the engine.

Bad EGR Valve Symptoms

  1. The Engine Light

If the “Check Engine Light” on your vehicle’s dashboard turns on, then you likely have a bad EGR valve. Usually, the computer of the vehicle will be able to sense the position or circuit of the EGR valve. If it senses an issue with one of these, the Check Engine Light will illuminate and then the driver can take it to the auto shop to have it repaired. Of course, the Check Engine Light could illuminate for many other reasons as well. It is best to have the vehicle’s computer scan the problem and produce trouble codes for you to look up. Commonly, the trouble code for an EGR problem is P0400. Check your owner’s manual to verify this.

  1. Weak Engine Power

If there is an EGR valve problem, the first symptom you’ll notice is performance problems with the engine. If your EGR valve is malfunctioning or just clogged, the air-to-fuel ratio of your vehicle will be disrupted. This will cause all kinds of engine problems like a reduction in acceleration, fuel efficiency, and power.

  1. Rough Idle Engine

A common symptom that arises from a bad EGR valve in a vehicle is something called rough idle. When malfunctioning occurs with EGR valves, they end up stalling in their open position. Then a rough idle will form from the recirculation of the exhaust gas, no matter if there are desirable conditions or not.

EGR Valve Replacement Cost

The average cost of replacing the EGR valve in your vehicle is anywhere from $247 to $333, depending on your vehicle’s year, model, and make as well as the type of system it has. The cost of parts will be anywhere from $195 to $266, while the cost of labor will be anywhere from $52 to $67. Of course, these costs estimates don’t factor in the fees and taxes that will get added onto the total as well. When you get the replacement done, the service should include an EGR transducer test, inspection of vacuum hoses connected to the EGR valve, a clearing of all the trouble codes, a cleaning of carbon deposits from the EGR pintle, and a test of the EGR valve to ensure it operates smoothly.

Read also: How Often to Change Front & Rear Differential Fluid

EGR Valve Maintenance Tips

Every 50,000 miles, you should have an air induction service done on your vehicle because it will clean the carbon and sludge that accumulates in your vehicle’s air intake system. And, of course, get regular oil changes too, because it will reduce the chances of sludge accumulating in your engine.

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