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This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic.
When the P trouble code appears, it indicates that the powertrain control module has found an issue with the immobilizer key ID.
There are three different elements that work together as a means to authenticate the identity of the vehicle immobilizer key. If the key identity is not the same as the programmed identity, then a trouble code will be stored and the malfunction indicator light could come on. Those who have the P trouble code stored on their vehicle will often find that their Check Engine Light is lit, as well as their security Light.
In addition, the engine may be more difficult to start and in severe cases it may not start at all. They will check for the stored trouble codes and will then reset the code. After resetting the code, they will want to drive the vehicle to see if the code returns. They can then start looking into the actual issues that would cause the code to appear, such as the faulty immobilizer key antenna or faulty immobilizer key.
Mechanics should start at the simplest potential issues first and then work their way up. Sometimes, a mechanic may overlook the fact that the error is actually caused by a problem with the immobilizer key. Instead, they may look at the ignition cylinder since the vehicle has trouble starting or will not start at all.
They may actually replace the ignition cylinder and find out that the code remains and that they have another problem. In most cases, the problem has to do with the key. The P code can actually be quite serious. In some cases, the only problem might be an illuminated Check Engine Light or a service engine soon light that comes on. However, most of the time, the problems are a bit more severe. People may have issues when it comes to starting their vehicleand in some cases it will not start at all.
Therefore, it is very important to have this issue taken care of as quickly as possible. The P trouble code has the potential to cause some serious problems for those who are driving their vehicles. This code, as well as any other code stored in the vehicle, should be looked at by a mechanic and repaired. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at With YourMechanic you can skip the auto shop altogether.
They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance.We recommend Torque Pro. In transmissions with electronic shift controls, power is supplied to the transmission control module through the transmission control output circuit. If the vehicle experiences a problem that requires the transmission to be put into limp mode, the transmission control output circuit voltage changes.
The transmission will engage in low gear as a self-protective measure and will not shift. When the engine is started or the key is turned to the run position, the transmission control module performs a system check. It looks for voltage on the transmission control circuit. If the circuit is open, it requests the transmission control circuit to be powered up from the PCM. In most vehicles, if the DTC is active the transmission will engage limp mode and will not shift. Because DTC P is primarily related to an electronic shift control issue, low battery voltage can cause the code to set.
Before beginning any in-depth electronic diagnosis, check that the battery voltage is proper. A telltale sign that the battery is weak and may be causing DTC P is if you require a boost to start the engine. Alternatively, perform a load test on the battery. Many auto parts retailers will perform out-of-vehicle load testing on batteries for no charge.
If the load test fails, replace your battery. Clear the DTC with a code reader. If the code returns, continue with diagnosis. Locate the transmission control circuit for your vehicle at the PCM connector.
You will need a wiring diagram specific to your make and model for accurate diagnosis, which you may be able to get printed from a parts retailer. The transmission control circuit should read 5. If the resistance is less than 5. Trace the circuit while monitoring the resistance, wiggling the wire and checking for breaks or rubbed sections in the wire. If you detect a change in resistance while wiggling a section, perform a repair on the wire, clear the codes and retest.
Using a DVOMcheck the transmission control circuit resistance in the same way as checking for a short to ground. If the resistance is more than 5. To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked. Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.
Test the PCM by replacing it with a known good module and retest. Code P can set due to low battery voltage caused by either improper charging system operation or excessive draw during starting.
With the engine running, test the alternator output with your DVOM. When running, your alternator should produce in the vicinity of If it is less than A starter that draws excessive power during cranking can cause erroneous codes in the PCM. Common signs are slow engine cranking despite a fully-charged battery and no-crank situations with a full battery charge.
The starter may need to be replaced, then retest for DTC PYou can reset the computer on your Dodge Ram right from your home garage or driveway, saving yourself time and money. The Dodge is equipped with an on-board diagnostics computer that monitors all functions of the vehicle. Sensors positioned throughout the Dodge Ram send trouble codes to the computer when they sense a malfunction.
The computer illuminates warning lights and service lights on the instrument panel to alert you to have the vehicle looked at and repaired by a qualified mechanic. Once the repairs have been made, you need to reset the computer to turn off the warning and service lights.
Pop up the hood of your truck and hold it open with the rod. Locate the battery. On the batter is the negative battery cable clamp with a nut on it.
Loosen the nut with an end wrench.2017 RAM Cummins Low Voltage Fault Diagnose and Repair
Remove the negative cable clamp from the battery, taking care not to touch the positive side of the battery with it. Let the vehicle sit for 30 minutes.
Put the negative cable clamp back onto the negative battery terminal and tighten the nut with the end wrench. Put the key into the ignition and turn over the engine.
Examine the instrument panel to make sure all service and warning lights have shut off. If so, the computer has been reset.
This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. Step 1 Pop up the hood of your truck and hold it open with the rod.
Step 2 Remove the negative cable clamp from the battery, taking care not to touch the positive side of the battery with it. Step 3 Let the vehicle sit for 30 minutes.Join Date: Feb Location: Midland,Texas.
Posts: Find all posts by powerstrokin Sponsored links. Ken Bittorf. Location: Sister Bay, WI. Re: trouble code P Sorry, checked the trouble codes I have for ' and found no such animal with those numerics. Find all posts by Ken Bittorf. Join Date: Jan Location: New York. Posts: 5. You can try pulling the connector of the Injection pump, cleaning any crude corrosion regreasing and reinstalling.
Good luck! You're local 5 Star can't do a thing for you!!!!!!!!! The fix for this is not in any of thier repair manuals. Cummins can't help because the ECM has Dodge's program?
Check all of the connections on and around the ECM for any signs of wear. Location: Arbutus,Maryland. Posts: 11, I would also check your connections on your Edge if you're getting a P code. Paul Misner. Join Date: Nov Posts: 1, Judd originally posted this in May of ???? Is that right?
New Project 2wd dually 12 valve, auto. Banks stinger kit woohoo! SOLD 4X4 crew cab, auto. Location: Suffolk, Va.We tailor to all years of Cummins diesels and Mopar related Trucks, Jeeps and SUVs, and with the vast tech and help knowledge of our great members, you can get help or info on practically any make or model vehicle!
So why not join us? Along with gaining all the awesome benefits that RCC members get, you will not have to look at this big block on every page! Welcome, Guest. Please login or register. Did you miss your activation email? Become a Supporter! Am I screwed? Author Topic: Codes? Read times. The only opinion that really matters, is the one spoken from experience. RamChargerCentral Advertisement.
Remove Advertisements. Have you checked the pump relay? I don't know how to test them, but it seems to be working because if you pull it and replace it with the key on it clicks and also makes a clicking sound at the Injection Pump. The lift pump was just replaced and does work.
P leaves some room for worry, but I am not up to date enough to clarify. Yes, there is fuel at all lines.
I don't know if its enough though.
Dodge Cummins Diagnostic Trouble Codes
Code is no communication between the injection pump module and engine control module.Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. P Dodge Description The transmission control relay is used to supply power to the solenoid pack when the transmission is in normal operating mode.
When the relay is off, no power is supplied to the solenoid pack and the transmission is in Limp-in mode. It is referred to as the Transmission Control Relay Output circuit or switched battery.
After a controller reset ignition key turned to the run position or after cranking enginethe controller energizes the relay. Prior to this the PCM verifies that the contacts are open by checking for no voltage at the switched battery terminals. After the relay is energized, the PCM monitors the terminals to verify that the voltage is greater than 3 volts. Get Access to Factory Service Manuals. Need more help? Get the P Dodge code diagnosed by a professional: Find a repair shop in your area.
Related Information. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P Dodge code? Have you replaced any parts?
Any information is appreciated. Repair Importance Level: 3. Why is the Engine Light ON? Home - About AutoCodes. Posted and Edit by AutoCodes.A powertrain control module PCM monitors functions and sensors within a Dodge pick-up's Cummins diesel engine. Once the PCM locates a problem, it assigns an error code. If the problem persists, the PCM turns on the Dodge's "check engine" light.
The system also has self-diagnostic capabilities: Once a Dodge's PCM ceases to work, a trouble code is generated. Chrysler uses an additional set, one that is particular to all vehicles in the Chrysler family.
You will need to locate these codes either online or in a Haynes repair manual. Read through both sets of trouble codes: Make a list of all the codes that deal with the PCM.
For example, code P refers to the PCM not being programmed. P and P deal with particular types of computer failure within the PCM. Place this list of codes in the Dodge's center console. Connect your code reader or diagnostic scanner to the Dodge's Data Link Connector. The DLC outlet will be positioned differently in different models that use a Cummins engine.
However, it will usually be found within the driver's side leg space: either beneath, to the left or to the right of the steering column. Turn either the code reader or the scanner and the Dodge's electrical "on. If you own such a device, start the Dodge's engine at this time.
P0882 DODGE - Transmission Control Module Power Input Signal Low
Look at the code reader or scanner's small display screen. If you do not see diagnostic codes displayed, you will have to retrieve them. Retrieval commands differ according to the brand and type of device. Buttons are located in different positions. Consult your device's manual for the exact instructions to follow. Scroll through the codes retrieved.
Since you are looking for PCM functionality, you can ignore any code listed as "pending. If the code reader or scanner did not retrieve PCM-related codes, then the component is working and is not in need of troubleshooting. If you do see PCM-related codes, then the module itself may need to be reprogrammed or replaced. You may need to consult a Chrysler-approved mechanic. PCM modules are usually not "off the shelf" merchandise, and you will need to order one that meets your Dodge's exact needs.
This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. Step 4 Turn either the code reader or the scanner and the Dodge's electrical "on. Step 5 Look at the code reader or scanner's small display screen. Tip In terms of troubleshooting, there is no major difference between PCM modules for gasoline or diesel vehicles.
About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.