P1444
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
Canister Close Valve Circuit. Open / Short to Ground.
Fault symptoms
On-Board Diagnostics
Type of diagnosis:
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Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
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Enable criteria:
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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 -7C.
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Engine running. Main relay voltage exceeding 10V. Output not active.
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Fault criteria:
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Voltage below 2V for 1 s.
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Dependents:
System reaction to a fault:
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Fuel adaptation and purging are blocked.
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OK report:
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Enable criteria fulfilled. Fault criteria not fulfilled within 60 s.
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Fault handling:
(For more information, see
.)
Diagnostic help
Fault diagnosis concerns an electrical fault in the connecting leads or in the valve.
Functions in the diagnostic tool related to the fault:
For more information, see
.
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.