Freightliner DEF air pressure air low - fault 4335 fmi 7 def air pressure sensor

[@bluntslayer]

Hey what’s the sensor next to the pressure sensor u took off? Its like a paper material

[@klikliks_service]

What is adequate air pressure. I'm getting 80 psi on the air test

[@alreyindustries]

I’m almost positive that 80 psi is correct. You’re getting 80 psi at the one box fitting or is that what the computer says?

[@klikliks_service]

@@alreyindustries computer and gauge.

[@klikliks_service]

I don't understand why it's throwing this code. I did have a blockage in the tube below. Sensor is clean. Makes no sense

[@alreyindustries]

@@klikliks_service did you take it all apart? If not, I would take it all apart and inspect it.

[@klikliks_service]

@@alreyindustries ok I will ty

[@gaelrueda9282]

What is the code DEF AIR LOCK VALVE?

[@alreyindustries]

What’s the fault code numbers? SPN and FMI?

[@gaelrueda9282]

@@alreyindustries the code is 1908 and the fmi 3

[@alreyindustries]

@@gaelrueda9282 what is the year, make, model, and engine? I’m not familiar with that code