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P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-825 < COMPONENT DIAGNOSIS > [QR25DE EXCEPT FOR CALIFORNIA] C D E F G H I J K L M A EC N P O P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR Description INFOID:0000000004349786 The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pres- sure increases. DTC Logic INFOID:0000000004349787 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Always perform test at a temperature of 5 °C (41°F) or more. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT-III 1. Start engine and warm it up to normal operating temperature. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Select “DATA MONITOR” mode with CONSULT-III. 5. Make sure that “FUEL T/TMP SE” is more than 0 °C (32°F). 6. Start engine and wait at least 20 seconds. 7. Check 1st trip DTC. With GST 1. Start engine and warm it up to normal operating temperature. PBIB3370E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0452 EVAP control system An excessively low voltage from the sensor is • Harness or connectors (EVAP control system pressure sensor • EVAP control system pressure sensor |