Checking fuel tank pressure sensor

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Start the engine and let it idle.
Open the fuel tank filler cap.
Go into the scrolling values list and read off the value of fuel tank pressure.
Fuel tank pressure must be higher than -1000 Pa.

Fig 2: Identifying Scan Tool
Courtesy of VOLVO CARS OF NORTH AMERICA.

Is fuel tank pressure higher than -1000 Pa?

YES
Refer to Checking vacuum downstream of the canister purge (CP) valve
NO
Refer to Replacing fuel tank pressure sensor