I have an R350 with 103k miles and it is throwing a 0016 code. When I turn off the check engine light it will stay off for a couple of days and then come back on. The engine runs just fine other than that. I know that usually that means balance shaft failure and major engine work. I have looked and the engine number is not in the range of the effected engines. I have swapped the camshaft position sensor and put new adjuster magnets on the right side of the engine. Any thoughts?

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tgmiller77
1997 Land Rover Discovery 158,000
1995 E320 Wagon 132,000mi
1999 E320 Wagon 97,000mi