According to the GM service bulletin, in some 2011-2013 Chevy, Buick and Cadillac vehicles the code P0442 might be caused by the leaking EVAP Vent Solenoid (CVS). The vent solenoid must be tested under vacuum and replaced if leaking. Another GM service bulletin 02-06-04-037J for Chevy Silverado / GMC Sierra recommends replacing the vent valve
CEL is on with P0455 code. I have searched and found some ideas on what it may be. Jeep Grand Cherokee & Commander Forums. ZJ Grand Cherokee Forum P0455. Jump to
Take some time to learn more about a P0128 code – you’ll thank yourself later. Car Values. Price New/Used; My Car's Value; P0455 - EVAP System Leak Detected - Large Leak. Browse All OBD-II TSB 18-010-02 Is a PCM replacement correct an erroneous MIL illumination for SAE P0456 that sets when driven on steep grades. Click to expand P0442 (M) Evaporative Emission Control System Leak Detected (medium leak) A 0.040 leak has been detected in the evaporative system. (A faulty gas cap may cause this code). Also see TSB 25-001-02A.

In the video I will show you the location and what all need to be removed to replace the oil pressure sensor commonly tied to the P0520 trouble code. Spoiler

How to Fix the P0733 Code. Like most DTC codes, P0733 shares similar triggers and symptoms with several other engine codes. Although this is generic trouble code, it can’t be resolved with a generic solution. It’s best to leave this matter to the experts if you aren’t confident in your automotive repair skills. hb3VO. 94 326 439 514 624 18 256 701

jeep grand cherokee code p0455