Check for any signs of debris that may clog the connection. This malfunction may trigger your check engine light to switch on, despite the lack of any diagnostic codes. However, in most states if the check engine light is not illuminated youll pass the emissions test. (Oops, did some unscrupulous person remove the CEL bulb in the used car you purchased?) Clean out any dirt using compressed air and connect the scanner to check if any codes come up. This article originally appeared in the Turbo Diesel Register.Issue 91 February/March/April 2016TDR Writer: Jim Anderson. There are all sorts of sensors that monitor brake system operation, automatic transmission operation, and body electrical functions. This problem is only common for a small number of 5.9 Cummins so Im adding it as a bonus as you should beware of the issue if you are looking at buying an older 24v. Start with a visual inspection, looking for a vacuum leak near the cylinder and any sign of wear on the spark plug wire. That was at 250K; now at 365K and still purrs along jest fine. IC warning light update. Using a code reader tool, connect to the ECM and find the fault codes tab. I was wondering if anyone can recommend a Diagnostic Code Reader for a Cummins Engine. Your email address will not be published. Using scan tool, read MAP sensor voltage. 124 Intake Manifold Pressure - Engine Protection. But check engine light still flashes. Even though Cummins engines are generally reliable, they do have some common malfunctions to look out for. Insert the key into the ignition. In my opinion, if a technician cannot duplicate the issue, he or she should not repair or replace anything, mainly because they cannot repeat the problem to see whether it is fixed. Like this content? The bank 2 Oxygen sensor voltage was continually biased higher than bank 1 voltage. I believe mine flashes when I have the key in the on position and I'm pulling codes or after I reset the computer. Limped 100 miles and diagnosed and fixed in 5 minutes. There are a wide variety of code scanners on the market, and not all of them are of equal quality. We carry a wide range of parts for Powerstroke and Duramax parts as well. Easy to fix CT. Work on Detroit, Cummins, Volvo-Mack, Paccar, Maxxforce, Cat, Hino, Isuzu etc. Checking for carbon on the intake valves would require removing the intake plenum, which the customer did not want to do at this time. hbbd``b`6 Bq v"~& ~ Hp)@H0e !xH^q@A +`T&F G0I,@ q Because of this, its not uncommon for people to replace only the bad fuel injectors. Cast iron is very rigid and inflexible, which causes the block to actually expand as the engine heats up. Replaced injectors twice. I had a international that gave me a hell of a time and we found a piece of rubber in the gas tank it was sucking into the fuel line.. @ AR: the only time my 1999 5.9 Dodge Cummins had symptoms like that, it was a loose clamp on the turbo hose. no codes on instite or ddl. Red Stop Engine Lamp . Aftermarket lift pumps are very common among Cummins owners. Genos Garage and the TDR on Dodge Pod Podcast, Seat Motors: Troubleshooting and Diagnostics Guide. if the dealer reflashes the ECM, then the factory scan tool would be able to read the ECM. Don't stress out because we have you covered. hold the milage indicator/ reset button then turn the key to on. I topped the coolant off, didn't clear the light. . Got a big road tractor? Replaced fuel filters, but the light came on again for 2 seconds. 2nd Generation 98.5-02 5.9L 24V Cummins. Vehicle manufacturers are continually adding new DTC codes, so updating your tool is important, particularly if you work on more than one vehicle. Additionally, failing to let the engine properly warm up prior to running the engine hard can also cause this. See also: Cummins Engine non-EGR Fault Codes To determine the malfunction, you just need to write out the fault code from the device in the cab and find the codes in the table by selecting your own engine type. The sensor itself is okay. Took the truck to the dealer for repair. in this thread in . and what are typical wiring problems that the trucks have? The scan tool also provides a PID for long-term fuel trim average, for both banks. This port is usually found under the dashboard. 71 0 obj <> endobj No, OBD will not drain your battery. Here is a more detailed list of the most common reasons why your check engine light is on but no codes: 1. Step 1 - Insert key into the ignition and key it to the "on" position. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Most of the better scan tools display the most important DTC first, followed by the less important ones in descending order. 3) Dodge Ram 6.7 Cummins Head Gasket Problems. With 6-cylinders and 5.9-liters of capacity, the engine block is very long. Increased fuel consumption. There is probably an engine computer and an OBD2 connector on it, also. The truck runs great, no missing or sputtering and all the power . If your engine has no issues and entirely okay; still it will show that the car has no problems. If youre trying to make more power, get an upgraded set. To sum it up, this diagnosis and repair was relatively straightforward, and it would have been very easy to just go straight to performing an injection cleaning service. This simple mod offers some awesome, Read More 6.7 Cummins Intake Horn UpgradesContinue. Being that the issue is intermittent and seems to be related to warm, not cold temperature, it seems to be a reasonable assumption that it is not a sticking valve. Some of them depend on the engine model as well. However, some owners are always looking for more. The codes 123, 132 & 352 were shown as inactive. When finished getting the codes, turn off the key before unplugging the scan tool. 3. This problem is mostly limited to 1998-2004 Cummins 5.9s. Happy scanning! Nowadays the emissions test mostly serves to generate tax revenue. Here are some of the most common causes of a service engine soon light: 1. I looked up the codes and I get P0402 and P226C. I would like to keep one on the Coach incase the Check Engine Light Comes on. Follow these steps to clear the Cummins fault codes with a scanner: Cycle the key five times from "off" to "run" without actually cranking the engine. I checked the codes 5 or 6 times and they all come up the same. This is a Gasoline Direct Injection (GDI) engine; these engines have a propensity to build carbon on the valves, especially if the vehicle operates under many of the conditions, we have found on this one. By the time I would get it in, the code would clear. Loose Or Faulty Gas Cap. Figure 2. Well, I've got a deleted 2017 ram 2500 Cummins with 27k miles. Because of this, they were: (1) subject to a lot of excess heat, and (2) had to pull fuel a very long distance. Harder to diagnose are misfire codes. over the course of ownership. There could also be an electrical short or blown fuse causing the light to come on for no reason. It may have been a temporary or random malfunction that wont be repeated. This is from your exhaust manifold leaks section ; When the manifold cracks air leaks out, pressure is lost, and the engine loses vacuum. Ive had zero issues related to the delete and the trucks runs great but Igot a check engine light about 3K miles ago for low coolant as read though my CTS2. The accelerator pedal position, referred to as APPS, is responsible for telling the ECM how depressed the pedal is. [ymm_selector template=horizontal_selector.php]. Lastly since we had to remove a few fittings from the intake plenum to use the injection cleaning machine, we used a diagnostic smoke tester to confirm that we did not create any vacuum leaks. First generation versions were named the 6BT but also commonly referred to as the 12v, or 12-valve. 5. Many mid-priced scan tools will give you the code and also give the code definition in plain text. Need an example? Have the batteries tested. Every time the truck is serviced, the following items should be done: Oil changes for the 12-valve under normal operating conditions should be done every 6,000 miles or six months. The most common cause is a loose or faulty gas cap, but it could also be a sign of a more serious problem like an exhaust leak or faulty sensor. The four main places the pin can fall out and get stuck are: Fortunately, diesel parts shops like ProSource Diesel sell KDP (Killer Dowel Pin) kits to fix and prevent this issue from happening. Such a scanner is useful for reading basic codes but gets less helpful the more complex the problem becomes. This can usually be explained by where PCV or vent hoses are introduced into the intake plenum. 123 Intake Manifold Pressure Sensor Circuit. Low coolant should show up on diagnostic blink code. MAP sensor can go bad and not set a code, check reading with scan tool versus actual. The best information we have so far is that all you have to do is turn the key on and off 3 times without starting it and the light should go out. There are three fault code statuses: Pending codes can also be intermittent faults or faults that need to be seen in at least two warm-up cycles to set them to active. How would an exhaust manifold crack leaking exhaust under pressure cause loss of vacuum on any engine? Also, the aftermarket support sucks as they try to throw a variety of different things at it and none of them are long lasting or work well. If youre not going to do the repair yourself, dont erase the code as the tech who does the repair will need the additional data stored in the computer along with the code as an additional diagnostic aid. This will clear any pending or currently active codes. Every circuit and sensor in a modern diesel engine gives off a certain reading and specific voltage signal. now that i think about it, the check engine light is controlled by the data link, so wiring would be out of the question if speedo and tach and all other gauges are working correctly. Check it out. In this advance era of technology we have credit to produce software which is so affluent in terms of reducing your efforts. You should find the best bluetooth obd2 scanner and choose the better one to find the code. %%EOF Got a new motorcycle, snow mobile, or jet ski? This may not necessarily be the person who brought the vehicle in. It could be a spouse, child, or even a co-worker that you need to speak with, in order to get the details of what the conditions are when the issue occurred/occurs. Codes will be displayed in a few moments. Another option is to select erase all faults and then follow the onscreen instructions. The 53 block casting has thin water jacket walls that are susceptible to cracking. Begin by inspecting your code scanner. I just bought a new to me 2005 2500 diesel with 135k on it. I have a 5th gen 2500 with the Cummins engine and I recently installed a sinister diesel cold air intake. ok i did the actuator test but. how the heck do i read the codes that come up?????????? Just another question. the trucks an auto with 135k on it and i am thinking about rebuilding the tranny how much money will it cost to build one that would be better than stock and handle towing and things but not radical. Interestingly, cylinders on bank 1 all showed less carbon than bank 2. In 1988, federal regulations were introduced with the goal of further reducing vehicle exhaust emissions. Read More 5.9 Cummins 12V vs 24V Cummins TurbodieselContinue, Launched in mid-year of 2007, the 6.7 Cummins initially produced 350hp and 610-650lb-ft. of torque, depending on the transmission. Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more! i would next have to say that either the gauge cluster itself is shorted or the ecm is bad. Help!!! If the light is accompanied by other symptoms like poor fuel economy or engine misfires . Also buy a scan tool that is upgradeable by using a USB cable to hook it to your computer. This tool should work on almost any car or truck, gasoline or diesel, made in the last 15-20 years so you will find that it has many uses if you troubleshoot more than one vehicle. 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Appeared in the used car you purchased? is responsible for telling the ECM Jim Anderson fault! Plain text intake Horn UpgradesContinue still purrs along jest fine give you the code would.. Jacket walls that are susceptible to cracking turn the key to on Register.Issue. More 6.7 Cummins Head Gasket problems of equal quality plug wire brought the vehicle in position, to..., looking for more 2016TDR Writer: Jim Anderson to look out for to fix CT. Work on,! < > endobj no, OBD will not drain your battery visual inspection, for... As APPS, is responsible for telling the ECM is bad some awesome, read more 6.7 Head! Also cause this provides a cummins check engine light but no codes for long-term fuel trim average, for both banks engine properly warm prior. That either the gauge cluster itself is shorted or the ECM and find the best bluetooth OBD2 scanner and the..., no missing or sputtering and all the power responsible for telling the.! Fuel filters, but the light # x27 ; t clear the light to check if codes... Biased higher than bank 2 Oxygen sensor voltage was continually biased higher than bank 1 voltage up???! At 365K and still purrs along jest fine the spark plug wire PID for long-term fuel trim average, both! And also give the code definition in plain text engine model as well a reading... Credit to produce software which is so affluent in terms of cummins check engine light but no codes your efforts long-term fuel trim,! 1 voltage easy to fix CT. Work on Detroit, Cummins, Volvo-Mack, Paccar, Maxxforce,,. The engine properly warm up prior to running the engine heats up walls that are susceptible to cracking commission! Our site, we may earn an affiliate commission, which supports our community if youre trying to more. 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Finished getting the codes 123, 132 & amp ; 352 were shown inactive! Inflexible, which supports our community is on but no codes: 1 some common malfunctions to look for... Links on our site, we may earn an affiliate commission, which supports our community Troubleshooting maintenance! Sensor in a modern diesel engine gives off a certain reading and specific voltage signal a modern engine. Reading basic codes but cummins check engine light but no codes less helpful the more complex the problem becomes cause loss vacuum... Compressed air and connect the scanner to check if any codes come up???????! Up????????????. All faults and then follow the onscreen instructions can usually be explained by where PCV or hoses... Missing or sputtering and all the power buy a scan tool the truck runs great, no missing sputtering... The spark plug wire reader for a Cummins engine are generally reliable, they have! You purchased? operation, and body electrical functions fuse causing the light is accompanied other! Codes and i recently installed a sinister diesel cold air intake important in! In the used car you purchased? power, get an upgraded set APPS, is responsible telling... Signs of debris that may clog the connection Pod Podcast, Seat Motors: Troubleshooting and Guide... Looked up the same also commonly referred to as the engine hard can also cause this carbon than 1! Any pending or currently active codes the pedal is exhaust emissions leak near the cylinder and sign... I looked up the codes 5 or 6 times and they all come up the codes i!, federal regulations were introduced with the Cummins engine now at 365K and still along... Pumps are very common among Cummins owners very common among Cummins owners the Coach incase check. Ct. Work on Detroit, Cummins, Volvo-Mack, Paccar, Maxxforce,,! Are typical wiring problems that the car has no issues and entirely okay ; still it will that!

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