Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Fuel Tank Pressure

Scan Tool displays 0 to 64 in H20 / 0.00 to 5.00 volts. The signal from the fuel tank pressure sensor is monitored by the PCM to verify that the evaporative emission control system is operating correctly and leaks are not present. Fuel tank pressure is used for EVAP system diagnostics.