2005 Chrysler 300c has a code P0406. I believe EGR needs replacing, Don’t know if it will make it 25 miles to dealer.
Car runs but sputters in power sometimes. Got a check engine light that comes on and off but mostly on. Checked the code through the ACC-ON ignition switch and it shows P0406 something with the EGR sensor. The dealer is 25 miles out and I don't trust the car that far. Car feels like it will cut out sometimes and also lurches at other times. I'm still driving it but only 5 or 6 miles from home.
My car has 96000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
P0406 involves the EGR system but that may or may not be the only factor causing your rough running condition. Typically, P0406 will set if you have a failed EGR valve, excessive carbon buildup, an open or short in the wiring harness, a poor electrical connection and/or a leak in the vacuum line to the EGR valve. To obtain a diagnostic and repair you need not drive the car anywhere as YourMechanic is a mobile repair service and thus can come right to your location. If you desire an on-site repair, please request a check engine light diagnostic and a certified mechanic from YourMechanic will pinpoint the cause of the fault and estimate the repair for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
The P0406 code is the result of the exhaust gas circulation (EGR) sensor A having a high circuit voltage. This code is set when the ECM identifies the EGR voltage is higher than the specified range, thus triggering the check engine light to illuminate on the vehicle dashboard.
P0404 = Exhaust Gas Recirculation Circuit Range/Performance. It could be caused for either carbon buildup or a bad EGR Valve.
If, for instance, you receive an OBD-II scanner error code P0406 problem, that means there is a problem with the exhaust gas recirculation system. If you hope to do the repairs yourself, you need to know how the exhaust gas recirculation system works, what might be wrong with it, and what needs to be done to repair it.
Technically you can drive without a working EGR valve.
It won`t affect the health of your engine, but it will hurt the environment. The role of your EGR valve is to reduce the number of toxic NOx gases in the air, so if it isn`t working quite right, more toxic gases will be released into the air.
Check engine light: as with most engine management components, a problem with the EGR valve may trigger the check engine light. Engine performance issues: if the valve is stuck open the vehicle`s air-fuel ratio will be disrupted causing engine performance issues such as reduced power, poor acceleration and rough idle.
If the air fuel mix becomes so unbalanced due to exhaust gasses flooding the engine thanks to an open EGR valve, it can even cause the engine to suffocate and actually stall whilst at idle. This can be very annoying if you`re in busy traffic and could even be dangerous at major junctions.
Spray the EGR valve cleaner onto the carbon deposits. Remove the carbon buildup with the use of a pipe cleaning brush and dull scraper. Repeat the entire process until all of the carbon deposits have been removed. Wipe off the surface using a clean piece of cloth.
Where are these sensors located? Mechanical EGR valve position sensors are mounted on the top of the EGR valve. EGR pressure sensors will be located close to the EGR valve as the exhaust gas hose must be connected to the sensor as well as the valve.
In some cases, a mechanic can fix the issue simply by cleaning any deposits off of your EGR valve. If the build-up has led to mechanical damage, however, you may need to have an entirely new EGR valve installed. The EGR valve plays a key role in both emissions control and engine performance.
Where are these sensors located? Mechanical EGR valve position sensors are mounted on the top of the EGR valve. EGR pressure sensors will be located close to the EGR valve as the exhaust gas hose must be connected to the sensor as well as the valve.
These common causes may include a clogged EGR valve that can no longer allow the correct flow of exhaust gasses, a faulty EGR valve due to the low vacuum coming from the EGR control solenoid, or an EGR that can not hold the vacuum.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
2005 Chrysler 300c has a code P0406. I believe EGR needs replacing, Don’t know if it will make it 25 miles to dealer.
ANSWER : P0406 involves the EGR system but that may or may not be the only factor causing your rough running condition. Typically, P0406 will set if you have a failed EGR valve, excessive carbon buildup, an open or short in the wiring harness, a poor electrical connection and/or a leak in the vacuum line to the EGR valve. To obtain a diagnostic and repair you need not drive the car anywhere as YourMechanic is a mobile repair service and thus can come right to your location. If you desire an on-site repair, please request a check engine light diagnostic and a certified mechanic from YourMechanic will pinpoint the cause of the fault and estimate the repair for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
EGR code, Cylinder 4 misfire code 0304 detected.
ANSWER : Hi there. The Exhaust Gas Recirculation (EGR) valve may be not designed for the emissions requirements for U.S. standards. If the EGR is pulling from cylinder number 4 and after replacing the EGR and the computer detects a misfire, then the EGR is malfunctioning and not responding. When you close off the tube to the EGR and the EGR light comes on and the misfire light goes out, then the EGR is not responding to your emissions system. I recommend replacing the EGR with the OEM specified part for the engine and all of the issues should go away. If you need further assistance with your misfire and EGR, then seek out a professional, such as one from Your Mechanic, to help you.
EGR code and Cylinder number 4 misfire detected.
ANSWER : Hi there. The Exhaust Gas Recirculation (EGR) valve may be the wrong one or the cheap design could be not designed for the emissions requirements for U.S. standards. If the EGR is pulling from cylinder number 4 and after replacing the EGR and the computer detects a misfire, then the EGR is wide open and not responsive. It is clearly the EGR as when you close off the tube that the EGR light comes on and the misfire light goes out. I recommend replacing the EGR with the OEM specified part for the engine and all of the issues should go away. If you need further assistance with your EGR and misfire, then seek out a professional, such as one from Your Mechanic, to help you.
The dealer says I need to replace my drive belt I had it replaced at 79000 miles and I am now at 124000 miles. I don’t see any cra
ANSWER : Drive belts are recommended to be changed between 40,000 and 70,000 miles. This is completely dependent on how the car is driven, and the conditions of the belt. Dirt, grime, harsh heat, bitter cold, high moisture, and other environmental conditions can effect the lifespan of your drive belts. Some belts have been known to function perfectly passed 100,000 miles. Take a look at the belts while the car is on, and your air conditioner running. Does the belt appear to be slipping? If the belt is not frayed, cracked, has chunks missing, or another physical deformity, then it may be stretched. I would ask the dealer specifically what the issue is with the belt. If they have noticed something is wrong with it, then they should be able to tell you what the diagnosis is before you proceed with purchasing a new one.
2006. Chrysler 300c ac on and making a squeaking sound and the clutch is not engaging fully.
ANSWER : The A/C compressor clutch on this vehicle can be removed without taking the compressor out or disturbing the refrigerant charge. To determine whether it is necessary to replace the compressor, once you get the clutch out if the friction friction material surfaces are oily, inspect the shaft and nose area of the A/C compressor for refrigerant oil. If refrigerant oil is found, the compressor shaft seal is leaking and the A/C compressor must be rebuilt or replaced (they are rebuildable; you can just put a new shaft seal in). Check the clutch pulley bearing for roughness or excessive leakage of grease. Replace the pulley and bearing assembly, if required. You might check the clutch relay, just in case it is intermittent, thus causing your problem. If you desire that a certified mechanic resolve the issue that you are having with the clutch/compressor, please simply request an a/c clutch compressor diagnostic/replacement and the responding mechanic will get it diagnosed and repaired for you. Please let us know if you have further concerns or questions as we are always here to help you.
Can a P0455 Code on a 2005 Pathfinder need an ECM reprogram to fix?
ANSWER : Hi there. A P0455 code indicates that there has been a large evaporative system (fuel vapor control system) leak; note the word system as this includes physical and electrical components.. This means that there could be a leak anywhere in the system or an electrical fault. An ECU/ECM reprogram can change the detection parameters for what is acceptable during the system operation and check, but not perform an actual repair. If there is a service bulletin that addresses this concern, then the reprogram may alleviate the check engine light. It sounds like either the concern was not properly rectified or there are additional possible faults in the system; gas cap, hoses, vent solenoids, fuel tank, etc…. Always ask to be shown the leak if a smoke test is being performed, the root cause of the failure, a description of operation for the part, and the old part. Evaporative emissions systems can be difficult to diagnose accurately, but a qualified technician with the proper knowledge and equipment should be able to properly and accurately diagnose your concern. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a check engine light inspection [https://www.yourmechanic.com/services/check-engine-light-is-on-inspection].
EGR P0404 code accelerating. 2005 Buick Terraza
ANSWER : For this code, there is a related technical service bulletin 06-06-04-003D dated March 20,2007. The TSB calls for installing a new EGR kit consisting of a new valve, tube, and wire connector, and directions to reprogram the powertrain control module. Just installing the valve is not a complete fix and reprogramming is needed. If you need further help with this, get in touch with a local dealer to see if this repair is covered.
Does the CV boot need to be replaced or do i need to replace the whole axle? 2008 Chevrolet Uplander
ANSWER : Hello – the CV joint or axle boot is available separately from a variety of sources. What your mechanic may be saying however, is that given your mileage, it would be best to replace the whole axle assembly for reliability reasons. Replacing the CV boot requires considerable labor as well, and your best repair $ may be to go ahead and replace the whole axle assembly. I would recommend a CV axle replacement by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
