P1451
Read the instructions below then start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
P1451 |
Fault symptoms
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CHECK ENGINE.
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On-Board Diagnostics
Type of diagnosis:- |
Once per driving cycle. Interrupted when fault criteria fulfilled or OK reported. Restarts next driving cycle.
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Enable criteria:
Accepted transition diagnosis of oxygen sensor 1. Purge active. Idling . Max. one change in status of brake light switch. Purge adaptation higher than -8 %. Car stationary for 8 sec. The diagnosis will start once the above conditions have been fulfilled. If the diagnosis is interrupted then the speed must exceed 0 on one occasion before it is allowed to restart.
Fault criteria:
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Tank pressure pulsating with 40 Pa changes more than 39 times in 7 sec.
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Dependents:
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P0444, P0445, P0501, P0502, P0506, P0507, P1444, P1445, P1576 and P1577.
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System reaction to a fault:
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Integrity diagnosis of purge system blocked.
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OK report:
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Diagnoses for P1451, P1452 and P1453 performed once and fault criteria not fulfilled. Fault criteria for P0452 or P0453 not fulfilled.
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Fault handling: (See section Fault handling III, other emission-related components and functions for more information.)
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Type III.
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Diagnostic help
Fault diagnosis concerns an electrical fault in connecting leads or in the sensor.Functions in the diagnostic tool related to the fault:
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Diagnostic status for the diagnosis.
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Tank pressure value, unit kPa. The value should be approx. 0 kPa with the filler cap removed. When the car is stationary, the value should be stable.
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See also description of read values in Menu "Read Values" for more information.