How to Fix P1693 Code On Dodge Cummins? (Completely Explained)

There are over 15 distinct meanings for code P1693. Different manufacturers usually assign different descriptions for a code. But what does P1693 mean on Dodge Cummins? Dodge defines P1693 as a companion code for Cummins.

On most websites, you may find that the code refers to the malfunction in the turbocharger control circuit. But, in Cummins, the code has no connection with the turbocharger. Though a unique code, P1693 refers to extra codes in the system.

It is a companion code that appears when additional codes are in the PCM, ECM, or both. You need to scan the system with an OBD II scanner to read those other codes. However, going through this article, you will learn the meaning and solution for the code, and you will also find some extra codes it may show. Read on!

P1693 Code On Dodge Cummins

What Does P1693 Mean On Dodge Cummins?

As stated earlier,  the P1693 on Dodge Cummins trucks refers to the additional codes in the ECM. You can breakdown the code like this:

  • P – Powertrain, the system which transmits the power to the wheels
  • 1 – means the code is manufacturer specific
  • 6 – Computer auxiliary outputs
  • 93 – Specific Fault Index (In our case, the code refers to additional existing codes)

The code pops up when something is wrong in PCM (Powertrain Control Module), ECM (Engine Control Module), or both. So, the appearance of the code points out a different code in the control modules.

PCM may contain a code that informs you of the existence of another code. The code is unlikely to be in the PCM and cannot be recovered without the proper scanner.

How Serious Is P1693 On Dodge Cummins?

P1693 is not that serious if you follow the correct precautions. The problem is easily detectable with a suitable scanner. Not having a scanner may put you in trouble, though.

In that case, you will not be able to figure out the malfunction right away, which will cost you time and money. As a result, your car may not start at all!

Often, users drive the vehicle to a place, finding out the code after some time. You may guess the difficulty arising for those. Some users also needed to change the lift pump.

There is a chance that the P1693 code pops up on the screen without any reason, and you just need to clear the code and wait for the code to reappear. But, if you are lucky enough, the code will not come again.

What Causes P1693 On Dodge Cummins?

Engine misfiring, not starting, or hard starting – can all happen due to malfunction in the pump and can result in a P1693 code in your Dodge Cummins.

Other major causes of P1693 On Dodge Cummins may include:

  • Your ECU or PCU has found extra codes within the particular computers are in charge of specific controls within the car’s framework
  • There is another code in the system that might not have been there previously.
  • You got P0216 after the 5.9 24v OBDII scan, meaning the VP44 fuel injection pump malfunctioned.

How To Fix P1693 On Dodge Cummins?

There is no easy answer to this question. The p1693 code may show up on Dodge Cummins for a multitude of reasons. You have to identify the cause first and then move on to fix it.

Nevertheless, here are a few generalized pointers to help you overcome the situation.

Clear the Code from the OBD

Before doing anything, try to clear the P1693 code and wait for it to return. There is a possibility of setting off a soft code in ECM. In that case, the code will not come again. However, this happens rarely. But it is worth giving it a shot!

Consult an Expert

Are you facing the problem for the first time? Seeking the expertise of a skilled mechanic is advised to pinpoint the problem. The right software, code readers, and scanners – will be required to get an accurate diagnosis.

Diagnose using OBDII

P1693 refers to unknown or extra codes in the control modules. So, you need to know the exact make, model, and year of your car. Again, the right OBDII tools and other resources are required to diagnose.

Scanning the documents and codes in the freeze frame data is the simplest method. You can use them to identify the problem, provided you’re a DIYer.

Check for Other Issues

Remove the codes and retest the car. Observe if any of the indicators come back on. You may look beneath the hood.

Does it look like all the wires are connected? Is the wiring in good condition? Examine the area for any build-up or debris that might create issues.

Check for possible causes first. Examine the connected wire harness and connections carefully. Search for bent, broken, corroded, or pushed-out connection pins and other damaged components.

Other Symptoms Of Getting P1693 On Dodge Cummins

The injector might have some issues if your Dodge Cummins is making a sound like a clunky engine or rough idling, especially at specific engine speeds. Problems starting the car can also mean an issue involving the fuel system if the vehicle loses power when towing or pulling a load.

fuel injection pump

Most of the 5.9 24v users getting the P1693 code later allege that the problem was in the VP44 fuel injection pump. In this case, you will find P0216 using the OBDII scanner. Here are some common symptoms:

  • Rough idling at particular engine speeds
  • The engine might not start
  • Engine misfiring
  • While driving or idling, the machine may cut off
  • Losing engine power while towing or hauling loads
  • Service Engine Soon/Check Engine indicator is on
  • A problem with the lift pump

These are the most prevalent and evident difficulties. But they do not always suggest or establish a causal link between them.

There are a lot of codes in the system, and each of them has the potential to be specific depending on the manufacturer. So, providing a one-size-fits-all solution for any particular problem is extremely difficult.

Don’t worry if you find multiple codes. Try to solve them one by one and eliminate them for further progress.

How Much Does It Cost to Fix Dodge Cummins P1693?

At least an hour of effort is required to diagnose the P1693 code in Dodge Cummins. The majority of vehicle repair shops charge from $75 to $150 for this time.

The analysis time with the labor prices for auto repairs differs by region, car model, and engine type. If you find problems in the fuel system, you might need to change them or repair them. It will cost you money too.

P1693 code does not specify anything, making it harder to predict the cost. You might just spend some money to diagnose the problem, and further repair might not be needed.

Again, you may need to change some parts, which will cost you more. So, there is no way to tell for sure.

Can You Drive Your Dodge Cummins with P1693?

Driving with the P1693 code on Dodge Cummins trucks is permitted. But you need to check for the issues and resolve them as soon as possible.

You should take your car to a store with the proper OBDII scanner. Make sure that you resolve the problem before any further damage is done to your vehicle.

With the P1693 code appearing, your vehicle’s engine will not stop while driving it. But sometimes, the engine does not start at all after idling. So, it will be a hassle to go to the store.

Do not panic and call for help. In most scenarios, you cannot drive with P1693 because the vehicle may not start anyway.


The P1693 code on Dodge Cummins can range from complex issues to simple problems. You may help yourself by simply clearing the code, or you may have to go to an expert.

Remember, the experts are usually qualified professionals with years of experience. These are the individuals and experts who completed the task many times. Things frequently change in the car world. So, if you’re not involved in the industry, it’s best to get expert help.

Do you want to do it yourself? Ensure your resources are trustworthy. Also, do the homework so that you have the correct information!

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