P1391 Jeep Grand Cherokee. The cost to diagnose the p1391 jeep code is 1.0 hour of labor. Th a 4.0 engine and auto transmission, i am getting code p1391.
There are a lot of fault codes that indicate to jeep grand cherokee wj transmission malfunctions and limp mode.
Codes read p1391 and p300s, all cylinders misfire. • here's two threads worth reading as well: The mil is controlled by a transistor on. I have a 2001 jeep grand cherokee and it giving me four code p1391 p0351 p0352 p0353 i will like to know the problem please for some reason you question has been duplicated several times, so i will answer this one.code 1391 may be a problem with the abs system, the other three codes are.