WJ (2001 Jeep GCL) P0453
I recently purchased a used Jeep from a used car dealership and thus far the vehicle itself has been great. However, I noticed that the oil had not been changed recently, so I brought it in on day four of ownership.
Immediately, the check engine light went on. The OBD2 code is P0453 - Evaporative Emissions Pressure High. My scant research indicated that it might be the gas cap, so I checked that - it was clicked three times and seems to have a good seal.
Should I go and by an aftermarket cap, a dealer cap, or just bring it in for a smoke test, et al.?