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VP44

VP44 Dodge Injection Pumps

Common DTC Codes Associated with VP44 Diagnosis

  • P0216 (Fuel Injection Pump Timing Failure) - This code has often been misunderstood as the VP44 “Code of Death". It does not automatically mean the VP is bad. Low lift pump pressure and misaligned keyway can also set this code. If a customer has good fuel pressure and keyway alignment has been confirmed, look to VP being bad
  • P0251 and P0253 (Fuel Injection Pump Fuel Valve Failure) - The fuel solenoid on the VP is bad. This is an internal failure of the VP44.
  • P0336 (Crank Shaft Position Sensor Signal) - This code is associated with the 1998.5 and 1999 Trucks because these were the only years with Crank Position sensors. CKP sensor failures are very common in these year trucks and can cause a no start, hard start, or even an erratic idle. Verify crank signal with a handheld scanner before condemning the VP44
  • P1688 (Internal Fuel Pump Controller Failure) - This code usually means bad PSG (Pump Computer) on the VP44 and can most of the time be considered a VP failure.
  • P1689 (No Communication Between ECM and Injection Pump Controller) - This is usually a sign of PSG failure on the pump, but the customer also needs to check to the wire between ECM and Pump controller to make sure signal is reaching the pump. Also, faulty fuel pump relay can cause this code. Please swap fuel pump relay with horn relay in the fuse panel and see if the truck will run.
  • P1690 (Fuel Injection Pump does not agree with ECM CKP Sensor) - on 1998.5 and 1999 trucks suspect faulty Crank Position Sensor. If CKP signal is good, suspect faulty VP44.
  • P1691 (Fuel Injection Pump Controller Calibration Error) - Faulty VP44. Pump computer is faulty which will require VP44 replacement.

VP44 Injection Pumps for 1998.5-2002 Dodge 5.9L Cummins




What is the difference between the 12-month and 24-month VP44 pumps?

Both VP44 pumps are built to provide the same fit, function, and performance. From the customer's perspective, there is no noticeable difference in how the pumps install, operate, or perform. The primary difference is the PSG (Pump Mounted Driver/ECM) used during the remanufacturing process and the warranty coverage provided with the pump.

    • 12-Month VP44: Includes a 12-month warranty and utilizes a remanufactured/reconditioned PSG that has been tested to meet operating specifications.

    • 24-Month VP44: Includes a 24-month warranty and utilizes a new PSG, allowing us to provide the longer warranty period. In normal operation, customers should not expect a difference in power, drivability, fitment, or performance between the two pumps. The 24-month option is primarily for customers who want the additional warranty coverage and the added assurance of a new PSG.

In addition to our parts, we also offer free advice on VP44 pumps. We know how important it is to keep these pumps running, and we're always happy to help our customers. So, if you have any questions about your VP44 pump, don't hesitate to give us a call at 859-737-4966.