2010 LR4 - L319 with persistent P0018-00 (28) trouble code

wdgiles

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I have a 2010 LR4 that is throwing a P0018-00 trouble code:
P0018-00 (28) Crankshaft position - camshaft position correlation - bank 2, sensor 1
At first it had a warning on the dash about reduced performance and the engine was pretty rough. That day the weather was colder. Now the weather has warmed to ~70 F most days and the dashboard message is gone, but the trouble code remains. I have cleared all codes with a GAP tool and replaced both camshaft position sensors on the (US) driver's side of the engine. Is the crankshaft position sensor pair next or am I dealing with a potential timing chain issue...??
 

jlglr4

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I’d say there’s a good chance this is a timing chain issue, since it’s a known issue on this engine and you’ve already ruled out the camshaft position sensor. If the crankshaft position sensor goes bad, I would expect position correlation errors on both banks, not just one. I think there’s only one crankshaft position sensor that correlates to both cams.
 

LR4Slavo

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Sounds like timing chain slack or even scarier, skipped timing. Best way to find out is to get both valve covers and timing covers off - check the position of the camshafts with the engine at TDC and check for slack in the timing chain.
 

jlach993

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I had the same code for a day during extremely cold weather. My chains sound good? It idles pretty quietly. It went away the next day and its been a few months since. I honestly barely drive it though cause of that issue until i get my chains done. It must’ve skipped timing ever so slightly where it runs, but its definitely something chain related.
 

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