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Modified JK TechTech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.
PLEASE DO NOT START SHOW & TELL TYPE THREADS IN THIS FORUM
I`ve got the U0121 code which I believe is causing my trans not to shift out of 1st gear. (limp mode) I`ve got 12v at the number one pin at the connector but nothing at 12 and 13 (can bus). Should I have voltage on those?
U0121 Loss communication with ABS module
