P0440

P0440 - GENERAL EVAP SYSTEM FAILURE





When Monitored and Set Condition

- When Monitored: Engine Running. Cold start test. Fuel Level greater than 12%. Ambient Temperature between 4°C and 32°C (39°F and 89°F) Close Loop fuel system. Test runs when small leak test is maturing.
- Set Condition: The PCM activates the Evap Purge Solenoid to pull the Evap system into a vacuum. The PCM turns the Evap Purge solenoid off to seal the Evap system. If the Fuel Tank Pressure Sensor reads between -1.5 to +1.0 hPa before the calibrated amount of time for a Medium leak/Small leak an error is detected. Two Trip Fault.





For a complete Powertrain Control Module Circuit Diagram, Schematics and Diagrams.

Diagnostic Test

1. CHECK FOR CURRENT DTC
Turn the ignition on.
With the scan tool, read PCM DTCs.
Is this DTC present?

Yes

- For complete diagnosis of this DTC, refer to (P0455) EVAP SYSTEM LARGE LEAK. P0455

No

- Go To 2

2. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.

NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.

NOTE: Check for any Technical Service Bulletins that may apply.

Were there any problems found?

Yes

- Repair as necessary.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test

No

- The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.