DTC P1410: Fuel Tank Pressure Control System Malfunction

If fuel gauge is working properly, go to next step. If fuel gauge is not reading properly, inspect fuel gauge and fuel level sensor operation. See step 3 of DTC P0461: FUEL LEVEL SENSOR CIRCUIT PERFORMANCE.
Remove PCM cover. If fuel gauge shows 3/4 tank or more, disconnect fuel level sensor connector. Using DVOM, check voltage (backprobe) between PCM connector terminal C51-2-6 and ground. For one second after ignition is turned on, voltage reading should be 10-14 volts. After one second, voltage should drop to 0-1 volt. If voltage readings are as specified, problem is intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. If voltage readings are not as specified, go to next step.
Disconnect electrical connector from fuel tank pressure control solenoid located on top of fuel tank. Using DVOM, measure resistance between the 2 solenoid terminals. Resistance should be between 28-36 ohms. Measure resistance between each terminal and ground. Resistance should be at least one megohm or higher. If resistance values are not as specified, replace pressure control solenoid valve. If values are as specified, repair open or short circuit in either Green/White wire between solenoid valve and PCM or in Blue/Black wire between solenoid valve, main relay and PCM. If wiring is okay, replace PCM and retest system.