P1693 Dodge Cummins Troubleshooting & What It Means

P1693 Dodge Cummins is a standard code in Dodge Ram trucks. The code appears when the engine control module detects a code related to the powertrain control module and vice versa. Therefore, you must use an OBDII scanner to determine the actual trouble code, which in most cases may be P0234.

But wait, what do these codes that trigger the P1693 mean? And can they be fixed? Below, you will find everything there is to know about the Dodge Cummins P1693 code, its causes, symptoms, and solutions.

P1693 Dodge Cummins Code Causes and Solutions Table

Causes of Dodge Cummins P1693 Code

Meaning of the Code

How To Fix

P0216 CodeMalfunctioning fuel injection pump timingReplace the fuel filter, fuel transfer pump, and wiring.
Install new VP44 fuel pump
P0234 CodeExcess levels of boost pressureReplace wastegate actuator
Install boost fooler
P0335 CodeMalfunctioning crankshaft sensorReplace the crankshaft sensor and wiring if it’s damaged
P0121, P0122, or P0123 CodesFaulty accelerator pedal sensorReplace the accelerator pedal sensor
Calibrate engine control module

From the table above, it is evident several codes may cause the P1693 Dodge code to be triggered. And each cause has a specific solution. Now, before we look at the causes of this Dodge Cummins trouble code, let’s first find out what it means.

What Does P1693 Dodge Cummins Mean?

Also referred to as a companion code, P1693 is a trouble code standard in Dodge RAM trucks outfitted with Cummins engines. It may appear in the RAM 2500, 3500, 4500, or 5500 trucks. The code pops up to let you know one or more codes are stored in your vehicle’s ECM or PCM.

Typically, this P1693 code is prompted when the powertrain control module (PCM) detects a code related to the engine control module (ECM). But to determine the correct code triggering the P1693, you must plug a scanner into your truck.

Causes of P1693 Dodge Cummins Code, Symptoms, & Solution

Below, we will look at the different codes that trigger the P1693 diagnostic trouble code, their symptoms, and how to fix them.

P0216 Code

This is the most common cause of the P1693 trouble code popping up on your truck’s dashboard. The P0216 code is stored in the PCM, which means the diesel fuel injection pump timing is malfunctioning.

This is a common problem with the 1998.5 Dodge RAM 3500 24 Valve and 2002 Dodge RAM 2500 24 Valve Cummins engines.


  • Sputtering and blowing white smoke
  • Loss of power
  • Rough idle and hard starts
  • Engine stalling


The first thing to do is adjust the injection pump timing. You could also replace the fuel filter, fuel transfer pump, and fuel injection timing circuit wiring. In addition, you may need a new VP44 fuel pump.

P0234 Code

The P1693 may also appear when the engine control module of your truck detects high levels of boost pressure. In this case, the P0234 code is responsible for triggering the P1693. Aside from this, another common cause of the P0234 code is a stuck wastegate.

This issue is typical with the 2001 Dodge RAM 3500 SLT, 2003 2500 Dodge RAM 4×4, and 2012 2500 Dodge RAM Crew Cab.


  • Engine misfiring or overheating
  • Sudden loss of power
  • Engine stalling or hesitation
  • Engine knocking or pinging


For starters, you may need to replace the wastegate actuator.

If this does not fix the problem, you should install a boost fooler to prevent over-boost codes like P0234. The boost fooler also enables you to increase turbo boost. Here is what a boost fooler looks like.

P0335 Code

When the powertrain control module does not detect the correct crankshaft sensor position, the P1693 code may be triggered. However, the cause for the trigger is the P0335 trouble code, which means the crankshaft sensor is malfunctioning.

Typically, you may encounter this problem with the 1999 Dodge Ram 3500 and 2005 Dodge Ram 2500 5.9L.


  • Vehicle stalling while driving
  • Lack of engine power
  • Poor fuel mileage
  • No RPM readings


The best solution would be to replace the crankshaft sensor. But before that, check to see if the wiring harness is damaged. The wiring and connectors could be corroded.

If yes, you replace the wiring alone. Check out this video on how to correctly replace the crankshaft sensor.

P0121, P0122, or P0123 Codes

Another common cause of the P1693 trouble code in Dodge Cummins engines is the P0121, P0122, and P0123 codes. All these codes are an indication that the accelerator pedal sensor is faulty.

These codes are stored in the engine control module (ECM) when low voltage is detected on the accelerator pedal sensor circuit. You may encounter this issue with the 2001.5 Dodge Ram 2500 Cummins and 1999 Dodge Ram 24V 2500.


  • Sluggish acceleration
  • Engine knocking or jerking
  • Idling and no pedal response
  • Shorted voltage readings


If the accelerator pedal position (APP) sensor is faulty, replace it. But before doing so, you should test its voltage using a voltmeter to confirm if it is working.

After replacing the APP sensor, you should do engine control module calibration to clear the code.

How Do You Determine The Causes of the Cummin P1693?

You could take your vehicle to a professional mechanic or a trusted auto repair shop for proper diagnosis. Since the mechanic has the right diagnostic tools, they can easily extract the codes triggering the P1693.

Alternatively, buy a code reader or scan tool like an OBD2 scanner. Plug the scanner into your Ram truck to determine the actual code causing the P1693 trouble code.

Read More-

  1. How to Fix U010c Code In a 6.7 Cummins?
  2. What Does P121B Code In Dodge Charger Mean?


How much does it cost to diagnose the P1693 Dodge code?

The repair and labor costs vary based on vehicle model, make, the stored code, and location. Even so, most auto repair shops’ rates range between $75 and $150 per hour.

How long does it take to fix the P1693 dodge trouble code?

This depends on which code is triggering the P1693. For example, replacing an accelerator pedal sensor due to the P0335 code may take less than 15 minutes to complete.


The P1693 Dodge Cummins only lets you know the possible codes stored within your vehicle’s engine or powertrain control modules. While you could get a mechanic to extract the actual code for you, you can also do it yourself. Hook an OBD2 scanner into your car to determine which code triggers the P1693.

Once you have determined the valid stored code, you can quickly clear the P1693 Dodge trouble code. Of course, the cost and time needed to fix the issue may differ based on the code and your vehicle model.


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