I know this is an old thread, but in case someone else has the same issue that I did I wanted to share. My P6000 had the E-28 code a few years ago and spark plugs and coils cured it. A week ago it happened again and after a few starts with it in limp mode it would no longer start. It doesn't get many hours on it so I figured it was the cam sensor this time and not the coils and plugs again. I went to the local CAT dealer with the 91H2001170 part number; they didn't have an OEM part and said they could no longer get it, instead they sold me a Unisource Part # 80013525 that they stocked. With that sensor installed and the code cleared the forklift would sputter while cranking but not start. I put another set of NGK FR2B-D gapped to.035" and still no change. I put a new crank position sensor in and still no change. If I put the original cam sensor back in the E-28 code came back and it wouldn't even sputter while cranking, so I thought it had to be the cam sensor. I checked spark and it was erratic. Based on Swoop's comment about only using the OEM parts I search for CAT/Mitsu part numbers and could not find them anywhere online, only aftermarket replacements. I noticed that the original sensor had an NTK logo on it, so I went to NTK's site and tried to cross the CAT part # and even called and got no help finding a cross. I ended up looking through sensors for Nissan applications from the same period and found one that looked identical listed as a crank position sensor for a 2005 Frontier, Part Number EH0385. I ordered it on RockAuto for $6.39 on a wholesaler closeout deal. It came in today, I installed it, and it fired right up. So if you get this code and it is the cam sensor I would recommend ordering an NTK EH0385 sensor.

https://www.ngk.com/ntk-73310-eh0385-crankshaft-position-sensor

https://www.rockauto.com/en/moreinfo.php?pk=10057448&cc=1434650&pt=7196&jsn=19

If you need a crank position sensor I would try NTK EC0238, which is the RH cam sensor for a 2005 Frontier. I have not tried that, but it looks identical to the original crank sensor.