Q: I have a EGR malfunction

asked by on January 22, 2018

My car won't start, the codes read an egr malfunction

My car has 210000 miles.
My car has an automatic transmission.

Car is not starting Inspection $79.99 - $99.99 Get a Quote

The EGR malfunction might not be a "sole" cause of the no start. And, whether the EGR malfunction is a partial (contributing) cause or not depends on what the exact malfunction is with the worst circumstance being the EGR valve is stuck open creating an intake vacuum leak. To diagnose this no start, confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is on, you may see a security warning light. If the warning light is on, to temporarily override the immobilizer system, see these instructions. If the engine cranks at adequate RPM, be sure there is adequate fuel in the fuel tank and that the fuel is not old. Download any OBD-II trouble codes that have been stored and examine those codes for diagnostic clues and resolve those codes (make the indicated repairs once you diagnose actual parts). Check for adequate fuel pressure, injector operation, and a spark at the spark plugs. Basically, if the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have to be repaired. Check for vacuum leaks, an air induction fault like a stuck idle air control valve or, considering fuel, check for a failed temperature sensor that must be working properly to signal the PCM to enrich the mixture on cold start. Other possible no start faults are low compression, defective spark plugs, a defective coil(s), a failed crankshaft or camshaft position sensor, a failed throttle position sensor, and a broken timing belt. Regardless of the underlying cause, if you request a no start diagnostic the responding certified mechanic will get the problem diagnosed and repaired for you promptly. Please let us know if you have further concerns or questions as we are always here to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $65/hr

What others are asking

What are the three hoses coming from air box on my Buick verano?

Hello, thank you for writing in. There are several vacuum lines associated with the engine intake and throttle. One of which that does run along up towards the firewall is the brake booster line. This vacuum helps assist the master...

My car has a radiator leak and I need to get it to my mechanic

Claimed by Kevin Gainer

interference motor time jumped one tooth do you thing posting and rods are damaged belt did not break

A one tooth jump will often leave you still in the safe zone. Obviously, don't run the engine though to avoid an additional "jump" which will bring you more into the inteference danger zone. In other words, quit while you...

Something dragging under car

Hi. There are quite a few parts that can become loose and drug under the vehicle. Most of the time it is the skid plate under the front of the car. This plastic part will become loose and then drag...

Car only starts when pressing the gas pedal

Hi. The computer system that runs your engine has a memory system that requires the battery to keep it alive. If the battery is disconnected for any reason, the computer learns that specific idle, which is no the appropriate one....

My car is making knocking noise while I slow down and stopped

The engine will need to have the noise checked to see if the work done was done correct and nothing was left loose or not working correctly. The noise described if is not coming from the engine may be in...

hello i have a question, when changing rear struts most come without the Duralast Strut Mount, now do i need them?

Hi AJ. Thanks for contacting us today. Duralast is a brand name of a particular strut mount, so it's not required to use the exact same one. However, it is highly recommended to replace the strut mounts anytime replacing struts...

Why would my 4x4 high and low light flash three times when start up and driving in my 2002 Ford Explorer

Hello. Most of the time when this is occurring it is due to an electrical issue with the 4X4 system. I usually remove all of the connections at the transfer case and clean them and add dielectric grease. That may...

Car vibrates/shakes when sitting still in idle (in gear or in neutral).

This sounds as if you have a low idle condition. I can say your car isn't likely to suffer a catastrophic failure because of this. With a condition such as this, it is normal for it to run rougher when...

Related articles

A Buyer’s Guide to the 2012 Mitsubishi Eclipse
2012 2012 marks the end of an era for the Eclipse and Mitsubishi sends the sporty little car off in style. As affordable sports cars go, the Eclipse has served its segment well with stylish looks, respectable performance, and a...
A Buyer’s Guide to the 2012 Mitsubishi Outlander Sport
If If you’re looking for an SUV, but don’t need much space or off-road capabilities, the 2012 Mitsubishi Outlander Sport just might be the ticket. With it’s stand-out appearance that is sure to be noticed, it provides the features and...
A Buyer’s Guide to the 2012 Mitsubishi Eclipse Spyder
In In 2012 Mitsubishi says sayonara to the 22-year run of the sporty little Eclipse, and with it, the Spyder convertible. This sleek, stylish soft-top has enjoyed many years of popularity as a fairly affordable option for those with a...