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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
Yeah, it almost has to be a bad vent solenoid, or a broken connection in the wiring to it. This code is saying that the PCM is not seeing the voltage change when it grounds the vent solenoid to activate it.
Should have system voltage at one terminal with the ignition on, and a ground at the other terminal when the PCM commands the vent valve open.
There is a vacuum hose between the firewall and the back of the motor, it is formed with the 2 ends different diameters. The hose collapses when it is running which causes the engine to stall. I believe this is a dealer only item. Just replaced mine and the car runs fine now.
Take it to auto zone and have the codes read for free.
its just a vacuum hose probably. mine did it before too.
Autozone will not provide enough help.
Pull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self tests the computer runs the car through a drive cycle, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist. It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that none are still active.
Check that the Oxygen sensors are correctly installed and working. Also check with your ford dealership to see if your car is one of many that needs a new FUEL pump. Ford has a TSB on this and will replace it for free... I have a 2003 Focus SVT with all the same problems.
could be a PCV Valve. My 01' Ford Escort with similar engine needed that recently. Appox 5 dollars easy fix.
My 2000 Focus wagon had the exact same problem and I could hear vacuum sucking in the engine compartment. In the end it was two failures at once: 1) the PCV hose failure like everyone else, and 2) a broken white plastic vacuum cap on the intake manifold.
Some folks have luck simply replacing the odd-sized PCV hose with the Ford replacement, but I was not so lucky. In my case both ends of the PCV line (under the intake manifold and connected to the PCV valve) were bust. So, to replace the entire assembly I did the following:
I bought a "PCV elbow" (by Help! auto parts), hose clamps, 3 feet of 7/16" fuel line, and a replacement PCV valve all from Pep Boys. I bought a 1/2" brass hose connector from Lowe's. I connected the elbow to the fuel line with the brass connector and secured the PCV valve in the other end of the fuel line with a hose clamp. I removed the old hoses and PCV valve and replaced them with the new rig. I had to route the new hose around the engine block, but there was plenty of room.
I still had vacuum leaking and a really rough idle after replacing the PCV line. I found the source of the leak by using a length of hose as a stethoscope. It was a rotten, white plastic cap on the intake manifold. I bought a set of rubber vacuum plugs (by Help! auto parts) from Pep Boys and one was a perfect fit.
After both of these fixes the idle was back to where it was a couple of years ago. Good luck!
the vaccume hose is broken and is over heating you need to replace it for only $500
:if nothing has helped so far, check your egr valve as it probably just needs a good cleanin'. egr stands for exhaust gas recirculation and is usually located between the exhaust manifold and the intake manifold. it gives metered, pre-heated air from the exhaust to the carburetor and generally has carbon deposits on it. it sounds like yours has an abundance of carbon in the passage causing the car to die when your approaching a stop sign or something.Have you tried wires, coils or injectors?? Depending on the mileage, a compression check may be in order also. P0300 is random misfire.. P0301 refers to cylinder #1 misfire and P0306 refers to cylinder #6 misfire. Try the simple things like wires 1st... after the compression check.
Will engine light on 2005 silverado reset after problem corrected?
when you disconnect your battery and reconnect it will reset cumputer
Will the check engine light come on in extreme cold weather?
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
What does it mean when the check engine light on a 1994 Plymouth Voyager flashes 355?
The code numbers are two didgit codes. That was probably a 12 and a 55. 12 is start of message, 55 is end of message. Basically that means there are no trouble codes.
What could cause your skid control light to come on at 75000 miles?
usually the skid control light is not the only light to come on. if there is a check engine light and or abs light on also (i suspect that this is the case) these problems need to be addressed first. for example if the engine has a misfire, the skid control system cannot work properly so the computer trips both lights to let you know you ought to have it checked. when the light is on it will not operate!
Cleaned engine in 1996 Camry check engine light came on how do you get it off?
There are lots of reasons for the check engine light to come on. Some models have the light come on when the odometer hits a certain mileage point for scheduled maintenance. Also, if there is a fault in the firing sequence, injectors, vacuum, or other processes, the light will come on. "Cleaned engine" is a little vague - did you spray it with engine cleaner? If you did, and you rinsed with water, check your electrical connections and dry them out. If you went deeper, and removed the injectors and cleaned them, etc. Check over everything you did. You may have inadvertently clogged an injector or the electrical connection is loose. Find a friend who has a diagnostic computer and hook it up. It may return the fault code you need or it may return no fault code and you can reset the light. You can find the diagnostic handhelds at auto parts stores now and it could be worth it. The garage will charge you to diagnose, fix and reset the light and that could cost more than the device.
What can be wrong when the Service Engine Soon light comes on?
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
Why would the service engine soon light flash on a neon rt?
The service engine light can come on for a variety of reasons. A mechanic can diagnose the specific issue. It just means that the ECU has detected a problem with the emissions system. It may be a simple as a loose gas cap or it may be more serious.
How do you reset check engine light after an oil change on a Toyota Camry 2006?
The Check Engine Light has nothing to do with oil changes. It is on because the ECU has detected a problem with the emissions system.
What does the code p0172 on a 99 pontiac montana mean?
Fuel system too rich. Possible causes include, but are not limited to, bad Oxygen sensors, vacuum leaks, bad MAF sensor, bad coolant temp. sensor. Good Luck.
Try disconnecting the vacuum line at the EGR valve and plug it off with a cap or screw into the hose. The diaphrams get weak with age and seem to cause 99% of the surge issue. If not check the internal coil / power packs.
I have a 97 Ford Ranger, and when the engine light comes on for a while and then turns off. It is because i got bad gas somewhere. What I do is buy some fuel addative and fille the tank with it. Sometimes just one treatment works. Once in a while I have to use two treatments.
How do I set up a phone in a 2003 Jaguar X type?
you would either have to buy a parrot if your phone is not the jaguar one. If you buy the proper jaguar phone it just plugs in under the arm rest.
Check engine light wont go off?
The light is one because there is a problem with the emissions system. Once the problem is corrected the service tech will reset the light.
How many miles to reset check engine?
It is driving cycles not miles. It varies from manufacture to manufacture.
What do engine codes P0153 P0171 P0304 P0401 have in common on a ford 4.0?
P0153 02 Sensor Circuit Slow Response (Bank 2 Sensor 1) P0171 System too Lean (Bank 1 P0304 Cylinder 4 Misfire Detected P0401 Exhaust Gas Recirculation Flow Insufficient Detected
My check engine light has been flashing longer than usual is this bad?
A check engine flashing indicates an engine cylinder misfire
Fix the part that is setting the code in the first place.
What could be wrong with a 2000 Lincoln LS if the engine light on the dash will not go off?
To find out what is wrong with it you will have to take it to a repair shop or the ford dealer with a computer to hook it up, but the engine light being on something is wrong with the car, it kinda sounds like a ingition coil pack going out, if so it will only get worse and could also be many other little things, but it must be repaired before the light will go off, and needs to be repairs ASAP so it doesnt cause anymore damage, that is why the light came on is for it to be serviced and repairs ASAP.
I have the same problem with a 2001 LS V8 sport. They diagnosed this earlier this year when I felt a subtle pulsing in the car during heavy acceleration. They said they must change both according to Lincoln service number SSM 512 481 091 and replace BOTH pumps (which shocked me to find there was two). They listed the pumps as YW42-9275-BC and YW42-9H307-BA. Apparently these cross reference to part number E2274M from Airtex but I'll know more soon as it is on order from my local jobber. I do know that if you order a 'pump' from A/C number MU2013 you will get a sender unit only which is listed improperly (and probably why the Airtex costs about 25% more). One other item the dealer replaced on my LS was the Idle solonoid but that shouldn't impact the car while driving, just while idling.
How do you reset the engine light on 2000 beetle?
Take the battery cables off for 20 minutes. This hold true on all makes and models on all cars. But this does not fix your problem that made your engine light to come on in the first place. You must first make sure that is taken care of first.
What would cause check engine light come on after getting oil and oil filter and air filter changed?
None of these maintenance items will trigger the check engine light. The light is on because the computer has detected a problem with the emission system. Have the ECU scanned and retrieve the code. This code will tell you what part is being effected but not necessarily the defective part.
