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2007 chrysler 300c w\5.7l evap codes

  #1  
Old 01-15-2016, 09:57 AM
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Exclamation 2007 chrysler 300c w\5.7l evap codes

Hello im here with a 2007 Chrysler 300c w\5.7l, and im getting two evap codes, p0455 ( Evap Emissions System leak detected [Very small leak]) and a p0456 (Evap Emissions System leak detected [Gross leak\No Flow]). No I did a smoke down test found no smoke, and tested the purge cylinoid and it tests good. It only does this when parked overnight. it also has a code for incorrect engine oil type but I don't think that has anything to do with it
 
  #2  
Old 01-20-2016, 10:04 AM
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P0455-EVAP SYSTEM LARGE LEAK

•When Monitored:
With the engine running, during a cold start test with the fuel level above 12%, ambient temperature between 4 C and 32 C (39 F and 89 F) and the fuel system in closed loop. The test runs when the small leak test is maturing.

•Set Condition:
The PCM activates the Evap Purge Solenoid to pull the Evap system into a vacuum to close the ESIM switch. Once the ESIM switch is closed, the PCM turns the Evap Purge solenoid off to seal the Evap system. If the ESIM switch reopens before the calibrated amount of time, a large leak error is detected. Two Trip Fault. Three good trips to turn off the MIL.

Possible Causes:
EVAP PURGE SOLENOID VACUUM SUPPLY
EVAP PURGE HOSE/TUBE OBSTRUCTION
EVAP SYSTEM LEAK
EVAPORATIVE SYSTEM INTEGRITY MONITOR (ESIM) SWITCH
 
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