(VIN: -039999) Trionic T7 V6 OBD II (B308E)

P1444
Canister Close Valve Circuit. Open / Short to Ground.

Fault symptoms
- CHECK ENGINE.

On-Board Diagnostics
Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and does not restart until next driving cycle.

Enable conditions:
- 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 1S.

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 an electrical fault in the connecting leads or in the valve.

Functions in the diagnostic tool related to the fault:
- Activate valve output.

See also the description of activations under "Fault diagnosis, general" 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 multi meter, diagnostic tool or test lamp during the check.