What should I do if my EGR light is not working?

The repair of this condition is removal of the EGR valve and inspection of the passageway to check for a blockage. Each model vehicle has different procedures for clearing the passageway due to many different configurations of the system. Some Fords have a removable tube.

Why is there an EGR code on my Ford?

However, we often find EGR codes on Ford products caused by inexpensive plastic parts that falsely report position to the control module. Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system.

Why does my check engine light not come on?

You may also set trouble codes for an engine misfire, which would be in the PO300 range. It’s also possible your check engine light will not come on and you’ll just experience a noticeable problem such as rough engine idle or even engine stalling.

Where is the EGR valve on a Duramax?

Over time, the EGR valve will clog and will need to be replaced. Disconnect the cable on the negative terminal of the battery. Locate the exhaust manifold on the engine. The manifold will be on the right side, or driver’s side, of the engine, but its location will vary slightly depending on the particular Duramax model.

What kind of valve system does a Duramax have?

Duramax diesel engines are installed on many of General Motors light and medium capacity pickup trucks. The engines are all equipped with an EGR valve system, which operates by recycling a portion of the exhaust through the engine.

What’s the diagnostic code for the EGR valve?

Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system. With some exhaust gas issues you might set a diagnostic trouble code of PO401 or P0402.

What’s the best way to reset a check engine light?

In such a case, it is highly recommended to check the codes with a scanner instead. Switching the ignition on and off is also one method of hard reset without disconnecting batteries. Put the keys in your ignition and turn your ignition on and off consecutively after a second in each step.

Why is EGR not needed at engine idle?

This feature reduces or eliminate engine ping caused by early detonation. This function is not needed at engine idle or when the vehicle is cold. This is why the EGR system is quite complicated and receives many inputs from other sensors that facilitate its operation.

What should I do to keep my engine light out?

In this video I speak about a Detroit DD15 (DD13, DD16) engine but it really applies to most Heavy Diesel engine makes and models (Cummins, Volvo, etc). Keeping the EGR differential pressure ports and tubes clean and clear can help prevent problems like engine lights, “derates” and loss of power. Most importantly – Downtime.

How can I tell if my EGR valve needs cleaning?

There are 2 most common signs that your EGR valve needs cleaning. These signs are perfect for people that don’t have scanning tools. If you do have a scanning tool, you can go ahead and run diagnostics. The scanning tool will show any EGR related error codes if the valve needs cleaning or replacing.

What’s the code for an EGR valve throw?

What code will an EGR valve throw have? The P0401 trouble code is related to your car’s exhaust gas recirculation (EGR) system, which controls an engine and reduces emissions. Suppose a computer-controlled valve gives a certain amount of gases back into your engine to be burnt with the air-fuel mixture.

What’s the best way to clean an EGR valve?

Cleaning the Valve: After removing the valve, use an EGR valve cleaner, if possible. However, you can use carburetor cleaner or solvent as well. Apply the cleaner to the passages at the bottom of the valve, intake and exhaust passages. Use a dull scraper and wire brush to remove carbon deposits from the bottom of the valve, plunger and valve seat.

Where is the EGR valve on a car?

Usually, the EGR valve is located where on the backside of the engine. If you do not have direct access to the EGR valve without removing a lot of parts, you can find the nearest access to the EGR valve. On some vehicles, the closes access point to the EGR valve is through the turbo.

Can a check engine light get clogged up?

The EGR valve can get clogged up or fail entirely. If you’re even slightly mechanically inclined, you can remove the valve, clean it up, and reinstall it in a relatively short amount of time. If the valve needs to be replaced, expect to pay at least $125 for a brand-new, OEM-quality unit.

How can I tell if my EGR valve needs to be cleaned or replaced?

When the EGR valve is clogged or malfunctioning, it can cause irregularities in engine performance such as rough idling or valve knock, indicating that the EGR valve should be inspected. A trusted mechanic may be able to repair the EGR valve instead of replacing it.

Why do I have an EGR code on my car?

This is often due to carbon clogging passageways or improper operation of the egr-valve. However, we often find EGR codes on Ford products caused by inexpensive plastic parts that falsely report position to the control module.

What are the symptoms of a leaking EGR valve?

A faulty EGR valve or related component may leave the valve in either the stuck open or stuck closed position. The symptoms of a stuck open EGR valve are a rough idle with a lean air fuel mixture. The engine has a major vacuum leak. The symptoms of a stuck closed EGR valve are pre-ignition, ping, and knock.

What is EGR problem?

The EGR system works by recirculating a portion of the exhaust gas off the engine back to the engines cylinders. Modern engines require an EGR system to reduce the amount of emission and meet government standards. Problems with the EGR valve often include a leaking or clogged valve.

What is EGR valve failure?

An EGR valve. Failure to repair or replace the ERG valve could increase emissions from the car. A faulty EGR valve may result in a stalled car. An issue with an EGR valve is often diagnosed through reading the car’s diagnostic trouble codes. A trusted mechanic may be able to repair the EGR valve instead of replacing it.

What does EGR do?

EGR stands for Exhaust Gas Recirculation . It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR…

What are the symptoms of a bad EGR 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.

What is an EGR error?

The EGR error is actually the amount of calculated EGR flow error. The PCM determines an expected amount of total mass air flow required for a given engine RPM. The PCM takes this expected value and subtracts the measured intake mass air flow and the remainder is calcultated EGR flow.

What is EGR code?

EGR (Exhaust Gas Re-Circulation) systems are used to reduce the combustion temperature, thus reducing NOx formation. Code P0406 means that the EGR Valve Position Sensor is giving voltage readings that are too high, usually above the 4.0 – 4.5 voltage range.

What does check engine light on traction control light on?

Repair Topics > Computers and Sensors > Check engine light on tractio… Trouble codes P0404, P0405, and C0561 on 2007 Pontiac Torrent with the 3.4L engine, . check engine light on, Traction Control Light on P0405 Exhaust Gas Recirculation Sensor A Circuit Low, relate to problems with the exhaust gas recirculation valve (EGR).

Is the Check Engine light on or off?

Toyota Repairs This answer was rated: My check engine light is on as well as the traction control light… My check engine light is… My check enginelight is on as well as the traction control light. I think the two are connected. Track Auto gave me the code.

Why did my check engine light, and my traction control?

Same problem on 2013 Corolla. Tightened gas cap, removed positive battery terminal for 30 seconds, reconnected and voila. fixed. Thanks folks. 46 people found this helpful.

Why does my Trac light come on automatically?

(Btw, I read that the trac light comes on automatically when the chk engine light does because that feature disables with any engine issue sensed) Dealership found no reason and light fo off after enough regular cycles. Now I want to sell my car and wish I didn’t have this concern.

What does c1201 code on Check Engine light mean?

Either an improperly installed cap or a worn out one. The C1201 code is the one that tells the vehicle to turn on the check engine light and disable the traction and VSC. Basically, when the other two codes pop up, this one is in charge of letting you know there’s a problem.

What happens when the EGR valve does not close?

This happens as soon as the vehicle’s central computer detects that the EGR valve is in an abnormal position. For example, if the EGR valve does not close all the way or open all the way when it is supposed to, then the computer will detect something is wrong and activate the Check Engine Light. 2) Poor Engine Performance

What to do if your check engine light is still on?

If the check engine light is still on after three days, your problem may not have been fixed or you may need to try some of the methods below to reset it. 2. Turn the Car on and off Three Times Some vehicles will automatically reset the trouble codes that caused the initial error after the vehicle is turned on and off three times in succession.

When does the engine check light turn on?

The engine check light will illuminate when there is a faulty in the EGR valve. This light will not turn on until your vehicle’s computer picks up a negative signal from your EGR valve or any other engine component. Anytime you see your engine check light on, carry out a thorough examination of your vehicle’s engine as soon as possible.

What happens if you have a bad EGR valve?

When the valve is opened, exhaust gases are allowed through the vehicle’s EGR system to help control vehicle emissions. When the EGR valve has an issue, it can cause problems with the flow and operation of the EGR system, which can lead to increased emissions and performance issues. Usually, a bad or failing EGR valve will produce any these 4…

What do you need to know about EGR codes?

A basic explanation of the valve works would probably help with the understanding of the diagnosis and repair of EGR codes. Exhaust gas recirculation is necessary for emissions purposes. Unfortunately, when it malfunctions it can actually push emission levels off the chart.

Can you delete the EGR on a Chevy?

So, unless the SMOG test is on a Dyno (or the test-or jacks up the rear wheels, and engages the clutch), the EGR does not affect engine performance, unless it’s stuck open. I’ve deleted a few EGR setups on TBI Chevy’s without issues. MIL does stay on, but whatever.

Is it good to delete EGR valve on TBI Chevy?

I’ve deleted a few EGR setups on TBI Chevy’s without issues. MIL does stay on, but whatever. I’ve seen several EGR valves with so much carbon in them that they stuck open and always recirculated the exhaust, making for a crappy idle and low power.

What are the symptoms of a bad EGR valve?

A rough idle upon starting the engine (that is, when the engine is cold) and sometimes at a stop light or while looking for a spot in a parking lot (that is, at low engine speeds in a warmed-up engine). Stalling when the engine idles. Increase in fuel consumption.

How does the EGR work in a car?

The EGR valve recirculates burned exhaust emissions back into the intake system so the emissions can be re-burned, or “recycled,” out the exhaust. The system operates by the opening and closing of solenoid valves, regulated by a diaphragm.

What causes a failure code on an EGR system?

Another common problem causing failure codes in this system is that the tip of the valve will become irregular shaped from carbon deposits. When this happens it no longer creates a perfect seal. This can allow exhaust gas to continue to flow when not called for by the computer. An example would be at engine idle or when the vehicle is cold.

How can I tell if my EGR valve has failed?

You need to confirm whether the EGR valve has failed or carbon deposits have began upsetting EGR system and engine operation. Look for a round, thick, metal disc about three inches in diameter. In most cases, you’ll find it around the top area and to one side of the engine. You may need to look between and under some components on your vehicle.

What are the signs of a choked EGR system?

Decreased power, rough idling, check engine lights, strong fuel odours or even the engine stalling are all signs that your EGR system may be completely choked with carbon build up.

Why does the fuel management light stay on when the EGR is open?

This means the amount of hydrocarbon gases emitted from the tailpipe increases significantly producing a fuel smell. Your engine management light may stay on once your car detects an issue with the EGR valve. This could be caused when the EGR is either constantly closed or open.

Why do you need the EGR plate on your car?

With proper maintenance, the EGR system not only runs fine, but your engine runs fine as well. The EGR is there to reduce emissions. Of the big three emissions from a petrol or diesel combustion engine, the EGR reduces the worst one: NOx. NOx is what causes acid rain. It also tears up the lungs.

What to do if your OBD2 scanner is not working?

Do not worry about the connector not having that many pins in it most have pins missing which is normal. Try using the scan tool on other car first to see if it is working before checking the Mercedes. If it works check to see if the check engine lights works. Please let us know what you find so it will help others. helpful?

Why do I get No OBD code on my car?

Blown Fuse If you’ve plugged into your car’s diagnostic port and aren’t reading anything, you might think that your OBD-II brain has been fried, but don’t declare it dead yet. The most common reason for getting no OBD code is simply a blown fuse.

How to fix a check engine light on a Mercedes Benz?

Hopefully you don’t have any serious problems with your car. If it is a Mercedes Benz you can use the search function on Mercedes Medic to see if there is an article that will show you how to fix what is wrong. Once you fix the problem then you can use your scanner again to erase or reset the check engine light.

What does the O2 sensor on a Mercedes Benz do?

The input values from the O2 sensor are used to adjust the fuel delivered to the engine. You can get O2 sensors at a fraction of dealer prices on Amazon, that will fit Mercedes Benz. Check this one here for example. Bad Catalytic Converter If these go bad they start to get clogged.

How to reset exhaust gas recirculation ( EGR ) value with?

5)Using a soft bristled tooth brush, scrub the EGR Valve, spray further cleaner into valve if needed. Once all traces of carbon are removed, using a lint free cloth dry the EGR Valve. 6)Disconnect vacuum pump or OBDⅡ diagnostic tools.

What should I do if my check engine light comes on?

While yes, both yourself and AutoZone can read the engine computer’s stored codes, and through Fix Finder, determine likely causes based on thousands of mechanics intel, none of these can pinpoint with 100% accuracy exactly why the CEL came on.

Why does my check engine light turn orange?

When it runs into an issue that the ECU cannot correct, the check engine light (CEL) starts glowing. The light is typically yellow or orange, and features an image of engine with text telling the driver to check or service the engine or powertrain. The engine computer stores a diagnostic code when the light begins glowing.

Can you scan the Check Engine light at AutoZone?

In this case, the Malfunction Indicator (Check Engine) lamp on the vehicle’s instrument panel will light steady on. Remember to return the scan tool to an AutoZone employee when finished. These tools will not work with any other device other than the Z-Net terminals at AutoZone.

How to test an EGR valve, a simple procedure?

Connect a hand vacuum pump to the EGR valve in place of the vacuum hose and apply 15 in-Hg of vacuum to the valve (if you don’t have access to a vacuum pump you may borrow-rent one from a local auto parts store). As you apply vacuum to the valve, check for diaphragm movement.

Navigation