C1502: tire pressure sensor, more than likely, the tire shop damaged one of them. I'd hit them back up on it. Theres a procedure for changing tires with sensors. Walmart will check them for free and tell you which one is bad. They also sell them but they are $35 each. You can buy all 4 for a few dollars more on ebay. It doesnt really matter what dodge/chrysler you get them for but they gave to be 433mhz. 314mhz is the other option and is wrong for this car.
The other codes are for the engine not warming up fast enough. I'm guessing you didn't plug the coolant temp sensor back in when you worked on the car. The computer defaults to -20F which is so rare and so far off of average that it will run super rich, and terrible. That's first guess.
The second guess is that you didnt get a vacuum line plugged back in on the back of the intake. That or the EGR tube or seal is not installed properly in the intake. These aren't the easiest to install but are critical. Tilting the intake up at the front helps install the EGR tube easier. Leaving the EGR tube bolts loose, with a new gasket on the EGR valve, helps installation and prevents damage. They don't list a part number for the 2.7L but they do for the 3.5L which is the exact same thing. Like $1 or less. Just did one. Be sure and install the blue EGR tube to intake silicone gasket too.
The other codes are for the engine not warming up fast enough. I'm guessing you didn't plug the coolant temp sensor back in when you worked on the car. The computer defaults to -20F which is so rare and so far off of average that it will run super rich, and terrible. That's first guess.
The second guess is that you didnt get a vacuum line plugged back in on the back of the intake. That or the EGR tube or seal is not installed properly in the intake. These aren't the easiest to install but are critical. Tilting the intake up at the front helps install the EGR tube easier. Leaving the EGR tube bolts loose, with a new gasket on the EGR valve, helps installation and prevents damage. They don't list a part number for the 2.7L but they do for the 3.5L which is the exact same thing. Like $1 or less. Just did one. Be sure and install the blue EGR tube to intake silicone gasket too.
