2004 JGC PO codes 31 & 51 - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > Grand Cherokee General Discussion > 2004 JGC PO codes 31 & 51

Premium LED Lighting by VISION X, Proudly sold at ROCKRIDGFS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectCess Recovery Gear Snatch Tow Strap OffRoad @ ROCKRIDGE4WD

Unread 10-26-2013, 06:50 PM   #1
Registered User
Join Date: Oct 2013
Location: baltimore, maryland
Posts: 5
2004 JGC PO codes 31 & 51

I installed O2 sensors on a 2004 Jeep GC 4.0 liter. The upstream sensors were reversed causing (I assume) PO31 and PO51 codes and PO 136code. I reversed the sensors to their proper position but I'm still getting codes PO31 and 51 but not the PO136. I'm wondering if it might take some time to lose the PO31 and 51 codes. I've cleared the codes several times but they keep returning. Any ideas???????

edd821 is offline   Reply With Quote

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.