I have '98 V70 XC that has had a repeated case of the "Check Engine" light coming on. Th problems first started occurring right after I had brought the car into the local Volvo dealer in Bellevue, WA for the 40,000 mile tune-up about 16 months ago (though that might have been circumstantial). One day after picking up the car, the "Check Engine" light came on so it was brought back in. They replaced the charcoal canister and EVAP valve, and reset the light. About 2 months after that (and 4k miles), the "Check Engine" light came on again. When brought into the dealer, they were unable to find anything and reset the light (they did warn me about being sure to check that the gas cap was tight, and not to try to add any additional gas after the pump shut off). About 4 months after that episode (and another 5k miles), the "Check Engine" light once again came back on, so it was another trip to the dealer. They again replaced the charcoal canister and EVAP valve, and reset the light.
Here it is another 9 months later (and about 11k miles) and the dang "Check Engine" light has come on again. The car is now out of warranty, and I wanted to try and sort out the problem for myself. I hooked up my OBDII code reader and got a code P0108. According to the manual which came with my reader this code is for "Manifold Absolute Pressure/Barometric Pressure Circuit High Input". Can anyone out there help me interpret what the problem might be, and how to correct it? I haven't been able to sort out a solution from the Haynes manual for the car. This continual problem is wearing a bit thin, and has me wondering if I should hang onto this car.
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