Hi I have a 2004 Volvo with secondary air pressure problem wen I’m drive the gauge for the secondary

Did you fix this I have similar problem

 

did you fix this I have similar problem

 

Where is the secondary pressure sensor located? I have the same problem

 

All pressure sensors located under left foot panel.

 

Hi. Did you fix the problem ?
Exactly thesame happen to my 2005 volvo

 

..Did you fix your truck ?
I HAVE EXACLY SAME PROBLEM

 

Did any body know . I have my secondary air gate playing from zero to 135 psi in a minute, when it goes down the buzzer warning is on , can anyone help me what’s this for , I changed the pressure sensor not helpin anything, there no air leak all over truck pleas help

 

It seems problem is common with Volvos. I have same problem too. Where are the experts?

I have a 2007 Euro 4 Volvo FH13 480 with D13A engine. The issue started about few months ago with secondary air tank gauge being erratic. One moment it's up on pressure and next it's low and low pressure alarm chimes.
Yesterday after during regularly maintenance on the truck (rear air bellow), pressure on both air tanks could not go up after startup. However, on testing the reservoirs there was air in both primary and secondary tanks but not at the rear end of the truck.
Depressing the block valve knob on the emergency brake lever harder seems to get the gauges on the dash to work and pressure started to build up.

What could be the cause of this problem?

 

Did you guys fix this problem… please respond I have same problem 2006 volvo