P0452

DTC P0452 - EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR LOW INPUT

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of tank pressure sensor.
Judge NG when out of the standard value.




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVING CYCLE
Perform the diagnosis continuously in 2 seconds after starting the engine.

DIAGNOSTIC METHOD




- Abnormality Judgment
Judge NG when the continuous time until completing all of the malfunction criteria becomes more than time needed for diagnosis.




- Normality Judgment
Judge OK and clear the NG when the malfunction criteria are completed

DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed

FAIL SAFE
Fix the fuel tank pressure at 0 kPa (0 mmHg, 0 inHg).

ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)