Questions & Answers for: Dodge Grand Caravan whats p0456

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03 grand caravan ex 3.8. check engine light - code po456/evap sys small leek. tried new fuel cap, light still on. What hoses can I look for to find a leak?? or could it still be fuel cap and sensor ...

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2002 dodge gr caravan code p0135 and p0456 what do these mean 135 is O2 Sensor Heater Circuit (bank 1 sensor1) 456 is Evaporative Emmission Control System very small leak detected

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troubleshoot codes I have a problem with codes p0442, p0455, p0456. I looked up p0456 and somebody said that they replaced the stock champion plugs to different plugs. He said that it helped. What can

2001 Dodge grand caravan with P0456 fault code (evaporative Emission system small leak). What could be causing this and how do I fix it? Hose cracked,loose,different switches,sensors,gas cap, any ...

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