How to Fix P0607 Code On Cummins? (Complete Solutions)

Having an issue with your Cummins engine can be a hassle. If that issue is unidentifiable, then it is even more of an annoyance. DTC codes make our lives easier.

P0607 is one such important code. It is a standard DTC issued whenever a particular problem is with the engine control module (ECM). This usually involves a power failure or memory loss.

When your ECM malfunctions, this can give rise to problems. In this article, we will be covering the code P0607 in Cummins so that you will know how to resolve it. So scroll down below and keep reading.

What Does Code P0607 Mean On Cummins?

P0607 has a vital DTC in the Cummins engine. This code refers to when there is a particular problem with the ECM of your car’s mainframe. This could be either due to programming issues or physical damage.

Below, we have provided a brief breakdown of the P0607 code so that you can understand what exactly we are working with.

  • P = Powertrain, the system of components that propels your car forward.
  • 0 = a generic number derived from the SAE standard.
  • 6 = It refers to the computer’s auxiliary output
  • 07 = This is the specific fault index (in this case, it involves the issues with ECM).

How Serious Is Code P0607 Code On Cummins?

This is a severe code because it controls the entire ECM of the vehicle. Even a slight malfunction in the ECM can cause massive changes to your vehicle’s performance.

Additionally, with problems in the ECM, your Cummins engine might not be able to store the right amount of data so that it can be used later on.

Not only does it cause problems with the comfortability of the driver, but this is also a question of safety.  

No matter what, you shouldn’t delay or make excuses when this code starts to flash. Instead, go to a professional and fix it immediately, lest you regret it later.

What Causes Code PO607 On Cummins?

The Po607 code can flash in your car for multiple reasons. We have compiled and listed some of the more common ones below. You may even find that several of them seem familiar to you.

  • Physical damage or corrosion to the ECM
  • Exposure to water or fluids
  • The wire harness is misrouted or disconnected.
  • Faulty components or electronics
  • A dying or dead battery

How To Fix Code P0607 On Cummins?

If you are going to repair the P0607 code in your Cummins, there are several common repair steps that you can follow. We have stated the complete procedure below:

Step 1: Diagnose

The first step involves finding the problem and the area affected by it. You can use an OBD-II trouble scanner to do so.

If the scanner doesn’t reveal anything, you can manually check on the ECM and find parts that give faulty results that deviate from standard.

Step 2: Reset the Trouble Codes

Most often, the trouble codes can act up even if there are no issues with the corresponding area. In that case, you can reset the code. If the code stops flashing after the reset, there is no issue with the ECM.

Step 3: Replace Battery And Cables

If this doesn’t work, you can check the connection between your car’s battery and cables. If you find them faulty, replace them with working parts.

Step 4: Replace Or Reprogram The System

If the ECM system is entirely at fault, you might be required to reprogram its entirety. If reprogramming doesn’t solve the issue, you might need to replace the entire electrical system.

You can also reroute the wires and check for any wear and tear between them and the components they are connected to. Once a problem is located, you can patch it up or replace it.

Other Symptoms Of Getting P0607 Code On Cummins

If you get the P0607 code in your Cummins, there are several symptoms that you might experience. Some of the more common symptoms have been listed below for convenience.

Remember, these are only some of the common symptoms. So even if you still have the P0607 code flashing in your vehicle, it doesn’t necessarily mean that you might experience these symptoms.

  • The car doesn’t start under any condition.
  • Rough Driving, even if the gears are set at standard.
  • The car starts with a hard jerk.
  • The vehicle stalls all of a sudden while driving.
  • Fuel consumption increased.
  • Low or bad fuel economy

How Much Does It Cost To Fix The P0607 Code On Cummins

The cost of repair of the entire ECM is very expensive. Depending on the model and make, replacing the ECM as a whole can cost you as much as 900 to 2000 USD.

On the other hand, if you replace a few wires or components, they will set you back by 50 to 100 USD only.

You will also need to consider paying a labor fee to the mechanic you hired to help you out. This labor fee is usually about 80 to 100 USD.

Can You Drive Your Cummins With Code P0607?

It is impossible to drive your vehicle with the P0607 code flashing as long as the trouble code isn’t a false call.

Not only will it have adverse long-term effects on the engine of the vehicle, but it is also tough to drive the car while the condition exists. This is because faults in the ECM cause the vehicle to drive roughly.

Furthermore, driving with a persisting condition is a common source of potential accidents. If things go south suddenly, you may be gravely injured or even die from an accident.


P0607 codes are a very deadly issue for any car. Not only does the problem cause issues with the standard conditioning of the vehicle, but it also affects its fuel economy. As such, you should never delay fixing it.

However, while you should fix it as soon as possible, you shouldn’t attempt to do it alone. This is because fixing the ECM involves a lot of technicalities that are dangerous to try for an amateur.

As such, leave it to the professionals, and the professionals will know the best way to fix it!

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