I would call or email Volvo NA. We had a situation where the tranny kept going limp. The tech overrulled my diagnosis of pnp and did a rear seal job contending it was the oil all over everything causing the problem. I thought he was nuts at first and for sure when the thing went limp again after the repair--but its now been a cpl weeks since and hasnt done it again. We are hoping things got cleaned up-his diagnosis correct. Still keeping fingers crossed--hoping we dont need to find the selenoids also!