Hello. Truck is an '02 3500. OEM injection pump was replaced ten years and 70K miles ago with a "Fedex" type rebuild.

Cam positioning sensor went out last week (P0341) and was "successfully" replaced. Truck ran w/o problems for five days. This morning I started it up after a cold night and it threw three codes. Two are cam sensor codes (P0341 and P0342), and the third is the infamous P0216 code. Idles fine but is in limp mode, meaning that acceleration has been significantly reduced, but there's no limiting of vehicle speed. Before I tear out the VP44 and pop for another unit, I'd like to chase down the "coincidence" between a second camshaft sensor failure in less than 200 miles and injection pump timing failure. Is there any conceivable relationship between the camshaft sensor failure and the 0216 injection pump code? Or did I just get unlucky enough to have a cam sensor failure, a dud replacement sensor and an injection pump failure all at the same time?

I did not take out the injection pump to replace the camshaft sensor, although it's located behind the pump. I didn't crack the fuel lines or touch the wiring, either. So far as I can see, there are no leaks or loose wiring. Fuel pressure is 17-20 psi depending on throttle; filters have approx 2000 miles on them.

Thanks for any input.

 

I'd replace the CPS again or put the original one back in there before touching the VP. Then check all battery cables and terminals and major grounds for tightness and corrosion. Then check the alternator AC voltage levels. If either are a problem it will create phantom electrical anomalies.