Engine/Transmission (1998.5 - 2002) What causes the 0216 code?

[dknoch]

Does anyone know what causes the 0216 code for injection pump timing failure? Is it mechanical or electrical? What besides the VP-44 could it be? What inside the VP-44 fails and causes this code? Any and all help would be great. Thanks everybody! Dan.

 

[Slightly Modified]

I had the same code on my truck about two months ago. I took it to the dealer and they said it was an injection pump timing failure. My truck would be cruising down the road and I would mash the long pedal to speed up and nothing would happen. If I down shifted it would correct itself, sometimes it wouldn't. The dealer replaced the injection pump and things seem fine now. Good luck with it.

 

[dknoch]

That sounds like the same thing my truck was doing. Problem is very intermittent though. I went to the dealer and they said it didn't have any codes, then they cleared them again. I was wondering if anyone knows why the 0216 gets stored in the computer. Is it from a mechanical malfunction or an electrical problem or either?

Thanks for the help.

 

[15w40]

The VP44 uses internal fuel pressure to advance the injection timing. The way it works is the ECM sends a timing command to the Fuel Control Module, located on to of the VP, and the fuel control module changes the duty cycle on a solenoid that causes the internal fuel pressure to rotate a lobed ring. This ring is responsible for cycling three pump plungers creating a high pressure. The high pressure fuel then goes to the distributor and out to the injectors. One feature of the VP is a timing correction mechanism that monitors the ring rotation and causes the fuel control module to increase or decrease the duty cycle to the timing solenoid. If the correction is not possible, either due to low fuel pressure or damage to the ring, the error code is set, P0216.



I have no documentation on the above but have pieced this together from reading about the VP44 over the last few years.



Hope this helps.

 

[dknoch]

That helps a ton! Thank You very much! Dan.