Originally Posted by
jgjones095
i too have the same codes showing on my v70xc - occasionally, but its not speed related.
when I get these codes normally the box will stop shifting and get stuck in 3rd.
resetting the codes are the only way to overcome this for me.
what tranny have you got - aw55-50sn?
how does your box shift? smooth with no 'flares'. does it clunk when shifting from P-R-N-D?
Do you have geartronic (semi manual) shifting control?
leaving in 3rd sounds like going into limp mode.
i would say either dirty solenoids or valve body would be causing it - and the 1st place id start.
well after trying an oil change and fitting an external filter.
I do not a have a semi-manual transmission. I have a standard 4 speed automatic AW55-42 I believe. I have PR32L on the shifter.
I do not have any clunks when shifting into any gear while driving or at a stop. I don't believe I have any flares or high rpms when shifting like the trans is slipping. I have not had anymore episodes of limp mode since I did the transmission flush.
I reset the codes with a generic OBD2 scanner from the auto parts store after the transmission flush. They stayed away with 15+ miles of city driving.
I took it on the highway and left it in 3 (to test a theory) and when I hit 65+ mph the Arrow and the CEL popped right back up.
I drove 1.5 hours at 65-70 mph and the transmission shifted just fine with the codes on. It just never dropped below 2500-300 RPM the whole trip. I used cruise control to keep myself out of the boost. The trip computer shows I averaged 20 MPG with about 10-15 miles city and a little over 100 miles on the highway. This seems a bit low.
1999 V70XC, 184k and counting, Still getting to Stage 0. Need Nivomats and replacement wood for center console.
Planned upgrades: Double din with Morel hybrid ovation 6 doors, JL 12w7, Zapco C2k6, Arc Audio XXK1500. 16t with Green tune, Dual exhaust
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