Dodge Ram No Communication With Pcm

A Dodge Ram 1500 owner may experience a problem with the vehicle’s PCM, or power train control module. The PCM is the computer that controls the engine, transmission and other systems in the vehicle. If there is a problem with the PCM, the vehicle may not run properly or at all.

In some cases, the PCM may need to be replaced.

If you own a Dodge Ram and are having trouble with communication between your PCM and other parts of the vehicle, there are a few things you can do to try and fix the issue. First, check all of the connections to make sure they are secure. Next, try resetting the PCM by disconnecting the battery for 30 seconds.

If neither of these work, you may need to replace the PCM itself.

Dodge Ram No Communication With Pcm


How Do You Reset a Pcm on a Dodge Ram 1500?

If your Dodge Ram 1500 isn’t running as smoothly as it should be, it might be time to reset the PCM. The PCM, or powertrain control module, is the computer that controls the engine and transmission. If it gets out of whack, it can cause all sorts of problems.

Fortunately, resetting the PCM is a pretty easy process. Just follow these steps: 1. Disconnect the negative battery cable.

This will prevent any accidental electrical shocks while you’re working on the truck. 2. Remove the fuse box cover and locate the fuse for the PCM. It’s usually labeled “PCM” or “ECU.”

Pull it out and wait a few minutes before putting it back in. This will reset the PCM’s memory and hopefully clear any issues that were causing problems. 3. Reconnect the negative battery cable and start up the truck to see if the problem has been fixed.

What is Pcm on Ram 1500?

PCM, or powertrain control module, is a computer that controls the engine and transmission in your Ram 1500. It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. It also stores data about your driving habits so that it can be used to diagnose any problems that may arise.

How Do You Test a Pcm on a Dodge?

When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. The first and most common way is to use a code reader or scanner. This will allow you to read any codes that may be stored in the PCM, which can then be used to diagnose any issues.

Another way to test the PCM is through the use of an oscilloscope. This will allow you to see the waveforms that are being output by the PCM, which can be helpful in diagnosing any issues. Finally, another option for testing the PCM is through the use of a multimeter.

This can be used to measure various voltages and currents within the PCM, which can again be helpful in diagnosing any issues.

What Does No Bus Mean on a Dodge Ram 1500?

If you see the “No Bus” error message on your Dodge Ram 1500, it means that there is an issue with the data bus. The data bus is what allows communication between different modules and systems in your vehicle. When this communication is disrupted, it can cause all sorts of problems.

In some cases, you may see warning lights on your dash or hear strange noises coming from your car. In other cases, your car may simply not start. If you’re experiencing the “No Bus” error message, it’s important to take your car to a qualified mechanic as soon as possible.

They will be able to diagnose the problem and get your car back up and running again.

Dodge Ram 1500 PCM problems No BUS FIXED! No Communication PCM/ECM replacement. Problem solved! PT 1

2003 Dodge Ram 1500 No Communication With Pcm

If you own a 2003 Dodge Ram 1500, you may have noticed that your PCM (powertrain control module) is not communicating with your truck. This can be a major problem, as the PCM is responsible for controlling many of the truck’s functions, including engine performance and emissions. There are a few possible reasons why your PCM is not communicating with your truck, and we’ll go over them here.

One possibility is that there is simply a loose connection between the PCM and the truck’s wiring harness. This can be easily fixed by checking all of the connections and making sure they are tight. Another possibility is that the PCM itself has failed.

If this is the case, you will need to replace it with a new one. Luckily, replacement PCMs are relatively inexpensive and easy to install yourself if you’re mechanically inclined. Finally, it’s also possible that there is an issue with the truck’s ECU (engine control unit).

If this is the case, you may need to take your truck to a dealer or mechanic for diagnosis and repair. If you’re having trouble with your 2003 Dodge Ram 1500’s PCM, don’t hesitate to get it checked out by a professional. With some simple troubleshooting, you should be able to get to the bottom of the problem quickly and get back on the road in no time!

Dodge Ram 1500 Pcm Problems

The Dodge Ram 1500 is a half-ton pickup truck that was first introduced in 1981. Since its inception, the Ram 1500 has been plagued with PCM problems. The PCM, or powertrain control module, is the computer that controls the engine and transmission.

In early model Rams, the PCM was known to fail prematurely. This would cause the engine to stall or hesitate when accelerating. In some cases, the transmission would also slip or shift erratically.

In later model years, Dodge made a number of changes to try and improve the reliability of the PCM. However, these changes have not completely eliminated the problem. Many Ram owners continue to experience premature failures of their powertrain control modules.

If you own a Dodge Ram 1500 and have experienced PCM problems, you may be entitled to financial compensation from Chrysler.

Dodge Ram Bad Pcm Symptoms

If your Dodge Ram is having trouble starting, stalling, or running rough, it could be a sign of a bad PCM. Here are some other symptoms that may indicate your Ram’s PCM has failed: 1. The engine will not start, or it starts and then stalls.

2. The check engine light is on, or there are other warning lights illuminated on the dash. 3. The engine runs erratically, or Rough idling/misfiring. 4. Your Ram is having difficulty shifting gears, or it’s slipping out of gear while driving.

5. You notice a decrease in fuel economy.

Dodge Ram Pcm Reprogramming

Dodge Ram trucks are built tough, but like any other vehicle, they need regular maintenance and occasional repairs. When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. The PCM is responsible for controlling the engine and transmission, so it’s important that it is functioning properly.

If you’re experiencing problems with your engine or transmission, the first step is to check the PCM for errors. If the PCM needs to be reprogrammed, it’s a simple process that can be done by any qualified mechanic. Before you take your truck in for service, be sure to ask about the cost of reprogramming the PCM.

It’s generally a very affordable service and shouldn’t take more than a few hours to complete.


Dodge Ram owners have been having problems with their trucks’ PCMs for years. Some have even had to replace the entire unit. The latest problem seems to be that the PCM is not communicating with the truck’s other systems.

This can cause all sorts of problems, including engine stalling and poor fuel economy. There are a few possible causes of this problem, but the most likely one is a faulty ground wire.


  • Zayn

    Zohn Zayn Smith is a seasoned automotive enthusiast with over 15 years of experience in the industry. As the Founder and Chief Editor of Truckguider, he specializes in Dodge Ram models, including the Ram 1500 and Ram 2500. His deep understanding of these trucks makes him a trusted authority on everything from performance and maintenance to towing capabilities.

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