2006 Jeep Grand Cherokee P0152/P0174 codes

AUMAN69

MEMBER
2006 JEEP GRAND CHEROKEE
66,500 MILES

I recently had some issues with my 2006 jeep grand cherokee. It was originally giving me a P0300 code. I changed the spark plugs and it still had the code. I didn't drive it for a week and borrowed a car to get to work. I drove it yesterday for the first time and it sputtered a little when I started it but after it ran for a little bit it was fine and seemed to run better once I filled it with gas. The engine light didn't come on at all yesterday or this morning on my way to work. I left today at lunch time to run an errand and the engine light came on so I used my code reader to determine it was P0152 and P0174 codes. I know that 152 is bank 2 sensor 1 O2 sensor and 174 means system is lean. I think the 2 codes together point to one problem but I'm not sure what that is. Why did my P0300 code disappear and why is there now a P0152/P0174 code combo? Was this problem the real reason I originally got the P0300 misfire code in the first place? Is this something I can diagnose easily and can repair myself?

3 Replies

HMAC300

MECHANIC
48,601 POSTS

Checkc your fuel pressure with a gauge auto parts rent them

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Tuesday, September 17th, 2013 AT 1:27 PM

AUMAN69

MEMBER
2 POSTS

It didn't give any codes at all yesterday on the way home from work and I live an hour away from work. This morning, however, when I started it up to come to work the engine light came back on and it was only the P0152 code. There was no P0174 code this time. Should I still check the fuel pressure or do you think it's something else? What fuel pressure should I look for if I still need to check and what is my course of action after that?