P1444

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE.

P1444

Fault symptoms

•	CHECK ENGINE.

On-Board Diagnostics

Type of diagnosis:

-	Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:

-	General conditions for this trouble code: When starting the engine, the atmospheric pressure must exceed 78 kPa and the engine coolant and intake air temperatures must exceed -7°C.

-	Engine running. Main relay voltage exceeding 10V. Output not active.

Fault criteria:

-	Voltage below 2V for 1 s.

Dependents:

-

None.

System reaction to a fault:

-	Fuel adaptation and purging are blocked.

OK report:

-	Enable criteria fulfilled. Fault criteria not fulfilled within 60 s.

Fault handling: (See section Fault handling III, other emission-related components and functions for more information.)

-

Type III.

Diagnostic help

Fault diagnosis concerns electrical faults in connecting cables or in the valve.

Functions in the diagnostic tool related to the fault:

•	Activating the valve output.

See also description on activating under "Activate" menu for more information.

Checking the wiring

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.