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General Information

Name
Caleb
Year
2008
Make
Nissan
Model
Altima
Color
Black
Packages
SL
History
New engine
I have a 2008 Nissan Altima with a 2.5L and I am only getting 20 mpg on the highway. I have codes U1000 and P0725. I have changed spark plugs, air filter, and ran sea foam. The engine has 120,000 and body has 230,000. I cannot tell if my wiring harness or TCM is bad. Please help!!

Modifications

Drivetrain
FWD CVT
Interior
Leather
Exterior
Black
Audio
Bose
Lighting
None
Exhaust
Factory
Wheel and Tire
Factory

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