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: Atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperature 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 “Fault diagnosis, general” for more information.)

-

Type III.

Diagnostic help

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

Diagnostic tool functions related to this fault are:

•	Activating the valve output.

See also the description of activating functions under ”Fault diagnosis, general” for more information.

Check the wiring

Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.