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Update: My check engine light still comes on intermittently for DTS code P1804. I removed the High Pressure Pump Metering Unit which is attached to the high pressure fuel pump (injector pump), cleaned it and tested it, re-installed it. Mowed for a bunch of hours with no trouble light, then it...

I know you wrote this back in Feb but I'm having the same problem and have yet to find parts from anyone but Mahindra. They want $300 for a fuel pressure metering unit (pressure relief valve that feeds a metered amount of fuel pressure from the high-pressure fuel pump to the common rail)...

My check engine light finally came on while mowing. I checked for codes and found one code: P1804 -- rail pressure limiting valve opened. I'm using bczoom's helpful information to diagnose my problem. It mostly concerns checking the wiring and connectors. I'm getting ready to do that, but...

Wow bczoom, That was very helpful. I downloaded the manual and checked out the trouble code troubleshooter. Excellent references. Thank you!! Now, I'll finish my tale: I tried my old automotive code reader which blue tooths to my phone. It works! Unfortunately, (or fortunately depending on...

This is embarrassing, but I'm posting it anyway. Turns out I didn't have an oil pressure problem. In fact, after adding an actual oil pressure gauge to my dashboard, I discovered that I was looking at the wrong trouble light. I'm getting old so I don't see as well as I used to. I was looking...

I first had this problem a year ago at 500 hours. It was due to low oil. The reason I had low oil is, I had a User Manual I downloaded from online that was for a previous (by only a few months) version of the 1533 that had a 3 cylinder engine that required about half to 2/3ds of the correct...