If anyone is interested in additional info you can go to our company website and contact me. My choices were to replace either the diesel particulate filter or the engine control module--if one didn't fix the problem then try the other. The vehicle wouldn't even start. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete. The amount of pressure decrease expected by the is based on the temperature and flow of the exhaust gas. If not, where is it? The calculates the amount of ash and the pressure increase the ash generates in the diesel particulate filter. During a regeneration the expects the pressure to decrease.
Unfortunately I'm not as lucky this time and I'm seemingly stuck with the error for now. P242F Meaning : p Powertrain Code Problem is related engine, transmission and emissions systems. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 on this site the. Hopefully this will do it otherwise I guess I'm off to the garage! These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage. Maybe it is, but if so, such a manual procedure is poorly documented or well-hidden. The test fails when the pressure reading at the diesel particulate filter pressure sensor does not decrease by the amount determined by the. I don't think it's all in one place.
The test fails when the pressure reading at the diesel particulate filter pressure sensor does not decrease by the amount determined by the. It has the wires attached to it. The vehicle was going in for body damage repair, so I told the mercedes dealership to dig into the vehicle and find the problem. . It is just to the side of the air filter box. You should also check that the spark plug gap is set properly.
I ended up only having to buy the one new ecm and one emissions valve that was changed out early-on. We decided we weren't going to continue playing with something that worked. Hello to everyone and welcome. P242f Description The Powertrain Control Module monitors the pressure decrease at the diesel particulate filter following a diesel particulate filter regeneration for a concern. The engineers leaned towards starting with the dpf, but the dealership mechanic and I decided to start with the ecm.
There is even the chance that if we had tried to manually remate the original ecm, the original problem might have gone away, but since the new one was mated to my vehicle, I owned it--no returns. Fingers crossed that was it! Variant encodings not available on TechAuthority or on sprintertekinfo. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. Not the answer you're looking for? Problem was that the dpf looked clean through a borescope and didn't have any backpressure when air was blown through it. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. P242F code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display.
Since my van seems to have been cured, I'll post here and try to link the other threads back to here. If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. It finally came on hard and steady in April of this year, and the error code indicated that the diesel particulate filter was failing to regenerate. Have the fire extinguisher next to you and sit outside the car. When you see P242F engine fault code on your engine code reader this description will help you. The following is a write-up I posted on another site, but it applies to sprinter-source maybe more so: The past two years I've had a recurring check engine light that kicked out no error codes or error codes that made no sense. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.
The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver. The calculates the amount of ash and the pressure increase the ash generates in the diesel particulate filter. The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. If it catches fire stop the engine and extinguish the fire it's hard to catch fire but not impossible After you finish , take the car and if possible push the pedal to the floor in 1'st , 2'nd 3'rd , 4'th ' 5'th , gears will help burn some extra soot as while driving the exhaust temp will go much higher. Most of the 350 miles traveled today was highway speed at 70+mph 4. The tech then step-by-step, manually connected the ecm to the vehicle this manual process isn't a physical process, but it is still time consuming compared to plug-and-play.
I wonder how being a Sprinter service center pays off. After a day it goes back to the first stage again. There are a ton of variables however that can change how much soot an engine generates and therefore how often it will need an active regen. Everything mated except the electronic throttle control which was never a problem before. Would you like to answer one of these instead? Spark plugs typically need to be replaced every season or 25 hours of use. In short, the tool wasn't designed to allow a technician to do all the steps manually. At least that's what a McCoy Freightliner technician reports.