The jeep started to idle rough but drives fine and threw p0303 and p0201. Then my old lady called me and said it died leaving her friends house. So I got the trailer and went to get her. I got there and turned the key and all the idiot lights are on and odometer says no bus and it won't crank. I get home and it started and everything was normal. So I go to unload it the next morning and it won't start. I checked the codes and got p1001, p0513 and u0146. Was wondering if anybody had this issue before or new where to start to figure out problem?

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05 jeep liberty Kerma tuner, K&N filter 3 in. lift,
99 dodge 2500 jvd torque enhancer, 200 hp injectors, fass 150, 64/71/14 turbo, k&n cai, arp studs, hmr dual disk clutch

Bad or going bad battery can cause odd start problems. So can a cracked actuator pin that runs from the key assembly under the steering column to the ignition switch on the left side of the column.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs

+1 on the Battery, check the voltage.

P0303 - Cylinder 3 misfire

P1001 - Ignition key off too fast

U0146 - Lost communication with central gateway

P0201 - Fuel injector #1 circuit fault

Check the wiring harness on top of the intake by the #3 injector, it's probably rubbing on something and is causing a short, which will discharge the battery, which will give all of these DTC's.

Inspect all the wiring to the ECM on the driver's side and all the wires leading out of the ECM to the top of the intake, specifically paying attention to the wiring coming out of the bundle for the intake/injectors area.

I hope this helps, and I hope you find it CHEAPLY.

Good luck!

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Silver 2006 KJ 2.8L CRD Limited:
GDE ECO Tune / Fumoto Valve / E-Tecno GX3123 7v Glow Plugs / 2nd Gen Fuel Head / Mishimoto RED Hoses / Rockers/Lifters @ 114k / Hayden FC + 11 Blade Nylon / Sears P1 Battery / Transgo 45RFE-HD2 Reprogramming Kit / Timken Front Bearings

Haven't had much time to mess with jeep but my old lady's cousin said to put key in door and unlock and lock a few times. He said it reset the alarm system. We tried it and the jeep started and ran and she was able to drive it. Had to go out of town for couple days so it sat and when we got back its doing the same thing it was.

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05 jeep liberty Kerma tuner, K&N filter 3 in. lift,
99 dodge 2500 jvd torque enhancer, 200 hp injectors, fass 150, 64/71/14 turbo, k&n cai, arp studs, hmr dual disk clutch