Troubleshooting P0457, P0455, B1681, U0140, U0280 codes | Ford Explorer Forums

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Troubleshooting P0457, P0455, B1681, U0140, U0280 codes

curlymurt

Member
Joined
August 10, 2016
Messages
10
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City, State
Indianapolis
Year, Model & Trim Level
2006 Explorer Limited
During a couple hundred mile round trip my low has warning came on about 30 miles into the trip but I had just filled up. It showed everytime I started the car and the needle gas gauge seems to be working. The check engine light finally popped on during the return trip. These are the codes that are currently reading.

I don't know if they are all related or independent.

I followed some evap lines to the best of my ability and haven't been able to find anything yet. It appears one line goes into the rear differential, maybe? Is that an evap hose?

It's looking like I'm going to have to have a shop smoke the lines to find the leak, but wanted to check here to see if anyone's had similar issues... I didn't get much with my search results.
 






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