Proveitbragger Posted May 24, 2014 Report Share Posted May 24, 2014 My wife's 2009 journey sxt, is tripping the engine light after fueling. I checked the code and received P0452 Evap Pressure Sensor/ Switch Circuit Low. Any help would be appreciated. Quote Link to comment Share on other sites More sharing options...
Journey_SeXT Posted May 24, 2014 Report Share Posted May 24, 2014 (edited) P0452 Dodge P0452 Dodge - EVAP Pressure Switch Stuck Closed Possible causes - Faulty Evaporative Emission System (EVAP) Pressure sensor- EVAP purge hose/tube obstruction- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection What does this mean? Tech notes There is a factory service bulletin for the following Dodge models:2009 Dodge Journey2007-2009 Dodge Sebring2007-2009 Dodge Avenger2007-2009 Dodge Sebring Convertible2008 Dodge Town & Country2008 Dodge Voyager2008 Dodge CaravanThe factory service bulletin recommends reprogramming the Powertrain Control Module (PCM) to repair the problem. What does this mean? When is the code detected? An excessively low voltage from the sensor is sent to Engine Control Module (ECM). Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) P0452 Dodge Description The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (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. DODGE Technical Service Bulletin for Code P0452 What is this Bulletin Number: SB-1800309 REVC Bulletin Date: 2009-06-11 Component:100000 Power Train SummaryChrysler/jeep/dodge: flash-driveability improvements or mil illumination diagnostic trouble code p0452-evap pressure switch stuck closed. includes my09 town&country; voyager and caravan. *pe Edited May 24, 2014 by Journey_SeXT dhh3 1 Quote Link to comment Share on other sites More sharing options...
Proveitbragger Posted May 24, 2014 Author Report Share Posted May 24, 2014 I topped off the journey at BP today and the engine light turned off. I don't know if it is because I filled it all the way up( she never tops it off). dhh3 1 Quote Link to comment Share on other sites More sharing options...
rojoshb Posted April 27, 2016 Report Share Posted April 27, 2016 I have the same intermittant code usually below 1/2 tank. fill it up and code goes away. replaced fuel cap did good until last week now code seems to be intermittant and comes on whenever. looked at replacing esim canister and sensor seems to be a pain , but may do anyway as reprogramming the pcm will be at least 1 hour at 100 dollars an hour labor RJ dhh3 1 Quote Link to comment Share on other sites More sharing options...
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