P0452
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
EVAP Tank Pressure Sensor Circuit. 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 -7°C.
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Voltage below 0.300 V for more than 5 s.
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Dependents:
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.)
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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Pressure sensor value, unit kPa. The value should be about 0 kPa when the filler cap is removed.
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See also description of readings under
"Read Values" 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.
