Multiple S70 check engine error codes after collision

  • Thread starter Thread starter Armchair observer
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A

Armchair observer

My S70 was in a collision of moderate severity recently. The front was
crumpled slightly, but there was no evident engine damage. After the
accident, the check engine light came on, and the following diagnostic
codes were read:

541 Evap. valve
616 Cannister valve
447 Control valve Air Pump
212 Front O2 sensor signal
521 Front 02 heating
153 Rear O2 signal
522 Rear O2 heating
223 A/C pressure sensor signal

The engine appears to run normally, but the A/C is not working.
How could a collision cause all of these components to fail? Could it
be that the wiring is damaged? How should the repair process proceed?
 
541 Evap. valve
616 Cannister valve
447 Control valve Air Pump
212 Front O2 sensor signal
521 Front 02 heating
153 Rear O2 signal
522 Rear O2 heating
223 A/C pressure sensor signal
Click to expand...


Wiring or connector damage perhaps? This is not something to diagnose by
usenet!

John
 
Armchair said:
My S70 was in a collision of moderate severity recently. The front was
crumpled slightly, but there was no evident engine damage. After the
accident, the check engine light came on, and the following diagnostic
codes were read:

541 Evap. valve
616 Cannister valve
447 Control valve Air Pump
212 Front O2 sensor signal
521 Front 02 heating
153 Rear O2 signal
522 Rear O2 heating
223 A/C pressure sensor signal

The engine appears to run normally, but the A/C is not working.
How could a collision cause all of these components to fail? Could it
be that the wiring is damaged? How should the repair process proceed?
Click to expand...

I would imagine that there's a damaged or unconnected common ground
somewhere near the right headlight. But of course it could be somewhere
else, or the harness itself is damaged.

--
Mike F.
Thornhill (near Toronto), Ont.

NOTE: new address!!
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
Best bet return to the body shop that repaired & have them figure out what
happened
Glenn
 
Best bet return to the body shop that repaired & have them figure out what
happened
Glenn
Click to expand...

Just had the same happen. Body shop had no idea. Take it to someone that
knows Volvos.

Hammo
 
Thanks for the reply. There appears to be an empty rectangular socket
next to the passenger-side headlight. Is this where a ground connector
should have been plugged in? What does the ground connection look
like?
 
Thanks to a competent local garage, this problem was correctly
diagnosed. It turned out to be caused by a blown fuse and a loose A/C
pressure sensor. The local Volvo dealer (Big Dee, in White Plains, NY)
was unable to make this diagnosis and proposed changing out all the
items indicated by the error codes, at a cost of over $1,000. I am
very disappointed in Volvo's local dealer mechanics and I will not be
returning there for maintenance.
 
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