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SEF053V
SEF954S
Component Description
NHEC0235
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as
pressure increases. The EVAP control system pressure sensor is
not used to control the engine system. It is used only for on board
diagnosis.
CONSULT-II Reference Value in Data Monitor
Mode
NHEC0236
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
EVAP SYS PRES I Ignition switch: ON Approx. 3.4V
On Board Diagnosis Logic
NHEC0238
Malfunction is detected when an improper voltage signal from
EVAP control system pressure sensor is sent to ECM.
Possible Cause
NHEC0513
I Harness or connectors
(The EVAP control system pressure sensor circuit is open or
shorted.)
I Rubber hose to EVAP control system pressure sensor is
clogged, vent, kinked, disconnected or improper connection.
I EVAP control system pressure sensor
I EVAP canister vent control valve
I EVAP canister purge volume control solenoid valve
I EVAP canister
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Component Description
EC-390
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