P0327 code, 2015 LR4 53k miles

Pkoss · Jun 24, 2020

Hi forum,

I have a 2015 LR4 with 53K miles with up to date maintenance and recently had a CEL with the P0327 knock sensor code. Truck ran fine with no apparent knock and checked the sensor lines so cleared the code. It ran fine with no CEL for 5 days and now it’s back again. Anyone run into this code before? Any tips on resolving? Thanks!

DaytonaRS7 · Jun 24, 2020

what fuel do you use?

low grade or bad fuel is the first thing id check.
fill up with good (premium) fuel or put a fuel additive in.

Since it ran fine for a few days with no code, id assume to rule out the sensor as being bad. the code would have come back immediately if that was the case.

Pkoss · Jun 24, 2020

Thanks, Daytona. I always use premium and use Shell vpower pretty exclusively. Recently added Lucas fuel treatment and the CEL turned on 50 miles after so don’t know if that could be related. Any other insights?

avslash · Jun 24, 2020

Just spitballin' here.

Intermittently failing sensor

Bad injector causing lean condition

Dirty throttle body causing lean condition.

Pkoss · Jun 26, 2020

Thanks, I’ll look into those this weekend

P0327 code, 2015 LR4 53k miles

Pkoss

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DaytonaRS7

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Pkoss

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avslash

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Pkoss

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