Q: Fuel tank pressure sensor? on 2002 Volvo S60

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Vehicle stalled and check engine light came on. Will start and run ok. Had codes pulled at local parts store and code is for fuel tank pressure sensor. I have been unable to locate this part on the vehicle. Is it possible the code reader was giving a generic code and I have a different problem?
(1) Answer
The fuel tank pressure sensor, best I can tell via my resources, is located at the fuel tank behind the passenger rear wheel area. It would be on the fuel tank itself, requiring lowering the fuel tank to replace it. Keep in mind, this "code" could be not directly implicating the sensor as a failure. Troubleshooting should occur to find out what's not working right. Good luck!