P0301

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BG1988

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i agree it's the power issue see:

Dtc P0C2B sets when the hybrid powertrain control module has not detected an auxiliary transmission fluid pump control module diagnostic signal for at least 1.5 seconds.

P0c2b is the code i get I have replaced the pump even though it says not to do so (just for piece of mind)

but it more then likely the controller...see: https://static.nhtsa.gov/odi/tsbs/2018/MC-10154554-9999.pdf

maybe corrosion on the wires the controller is under the 12v battery pedestal

part number:

24261817 you may need an adapter for it to work with your Aux pump (pricey but worth it about 60$)​


make sure it's from a 2012 or 2013 model or ask about the date code
 
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j91z28d1

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added 11% fuel is definitely higher than it should be. +/-5 is pretty normal and about what most tuners shoot for.

mine gets a solid 20 doing the math completely city traffic with the wife driving it with zero concern for fuel savings on the cheapest gas no 4cyl mode and front and back ac blasting at all time even prestart to cool it down a few minutes before getting in. I'll take it since a 6.2 standard would be lucky to get 13 driven like this.
 

BG1988

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added 11% fuel is definitely higher than it should be. +/-5 is pretty normal and about what most tuners shoot for.

mine gets a solid 20 doing the math completely city traffic with the wife driving it with zero concern for fuel savings on the cheapest gas no 4cyl mode and front and back ac blasting at all time even prestart to cool it down a few minutes before getting in. I'll take it since a 6.2 standard would be lucky to get 13 driven like this.
over the last 1786 miles it averaged 18.9mpg 100% city v8 only mode last fill up was 20.3mpg
 
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