P1440

DTC P1440
ELC Purge valve stuck open. (Driving Cycle C)

Possible causes by suggested order of priority:
- Connectors C634, C152.
- Circuit integrity C634/19 (SY) - C152/1 (SY).
- Circuit integrity C575/1 (NLG) - C152/2 (NO).
- Purge valve supply from C575/1 (NLG).
- Purge valve.
- ECM.

Connectors C634, C152.
- Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

Circuit integrity C634/19 (SY) - C152/1 (SY).
- Check for open circuit, short circuit to ground, supply or other circuit, damaged or unlatched connector, intermediate connectors or headers

Circuit integrity C575/1 (NLG) - C152/2 (NO).
- Check for open circuit, short circuit to ground, supply or other circuit, damaged or unlatched connector, intermediate connectors or headers

Purge valve supply from C575/1 (NLG).
- Check voltage 10.0 to 14.0 volts

Purge valve.
- With ignition ON (position 2) and the purge valve connected electrically to the vehicle, disconnect both ends of the purge valve assembly from the vehicle and check if air can be blown through the purge valve using suitable equipment.
- If so, this indicates that the purge valve is stuck open and thus defective.

ECM.
- No detail available for this fault