2007 dodge grand caravan sxt showed P0402 code- changed egr valve missing even more- what else can i do-
These are things that cause P0402 are: Excessive Vacuum signal or Electrical signal to the EGR Valve The EGR Valve is defective and is opening too far or not properly closing Malfunctioning EGR Vacuum supply solenoid Lack of proper EGR system feedback to the computer from the: Manifold Absolute Pressure Sensor (MAP) Differential EGR Pressure Feedback Sensor (DPFE) EGR Valve Position Sensor (EVP)
these things need to be looked at...
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