2020 Subaru Forester P code Page 115

4. GENERAL DRIVING CYCLE

- Perform the diagnosis continuously after 60 s have passed since the engine started.

- Pay attention to the fuel level and temperature.

5. DIAGNOSTIC METHOD

Abnormality Judgment

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is less than 2 l (0.53 US gal, 0.44 Imp gal), extend 60 s

and make judgment with the Max. and Min. values for the fuel level in 60 s x 2. If a difference does not appear, extend the time (60 s x 3, 60

s x 4, 60 s x 5) and continue the judgment. If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is 2 l (0.53

US gal, 0.44 Imp gal) or more, the diagnosis counter counts up.

Time Needed for Diagnosis: 60 s x 16 time(s) or more

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Normality Judgment

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

Time Needed for Diagnosis: Less than 1 second

P0452

DTC P0452 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR LOW INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of the fuel tank pressure sensor.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION