I checked fuel pressure and it is 56psi at idle and it drop to 54psi above on 2002 Land Rover Freelander

it set code p0171 and p0174

by in Apex, NC on September 16, 2012
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1 answer
ANSWER by , September 18, 2012
There are several things that can cause those codes - you need a technician with diagnostic equipment and experience to diagnose it.