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Jeep Liberty, Auto Repair, SUV
#45 of 118 2003 Jeep Liberty code P0158
Jan 29, 2010 (2:38 pm)
Does anyone know what computer code P0158 stands for in a 2003 Jeep Liberty? We were out shopping and the engine light came on. My husband was turning the key and pressing the accelerator and this code showed up on the odometer. We havn't any problem yet but I assume something is brewing. Thanks
#46 of 118 2004 Jeep Liberty; bucking, engine light comes & goes
Jan 29, 2010 (9:28 pm)
Help, I have a 2004 Jeep Liberty. Has been a beauty for me. I've replaced 02 sensors left & right bank. I keep getting intermittent engine light, #1 thought bad gas seemed to clear up. Of late driving and vehicle engine will race, kind of buck, stall & restart. Engine continues to rev rpm's whether driving or sitting in park. Friend suggested may be vacuum seal(s) or cracked block. Not cracked block.
but I did notice onset of symptoms, if tank was low 1/4 tank gas, would rev. Also noticed when acting "funny" interior windows would frost-condensation. So, I tried running heat, thinking low tank, window condensation vehicle, no engine light, seemed to run fine...
Tonight, 1/4 tank gas typical acting funny time- I ran heat continously-no problems.
Does anybody have any idea what is going on-when engine revs, It's like gas pedal sticks-dangerous situation. Please advise
#48 of 118 Error code P1250 and P0299
Feb 15, 2010 (2:37 pm)
I have a 2005 liberty with the 2.8 l diesel. I have 2 codes that have poped up. The code p1250 is for VACUUM RESERVOIR SOLENOID OPEN CKT and the p0299 is for BOOST IN RANGE LOW. i have had issues with the EGR ckt in the past . hose splits, egr valve sticking open. and have been able to deal with them myself, I would like to check the p1250 problem out. but dont know where the unit is located. could use some help with verbal discription or diagrams.
#49 of 118 Re: Error code P1250 and P0299 [jeepon]
Feb 15, 2010 (8:39 pm)
Hi, I have been a Chrysler/Dodge/Jeep mechanic for 15 years. I am also the only diesel mechanic at my dealer. The P0299 Boost pressure sensor positive deviation, is a common code in the Liberty diesel. TSB # 25-001-05 Rev. A describes this condition. Essentially your PCM needs to be flashed (Reprogrammed) and the EGR valve replaced. The P1250 Vacuum Reservoir Solonoid open circuit DTC is also a code I've seen in the past. You most likely need a new Vac Res solonoid. It is located on top of the Vac Reservoir which is on the passenger side of the engine compartment. It is a kind of stepped cylinder with 2 vacuum lines going to it and an electrical plug. Hope this helps.
#50 of 118 Re: Error code P1250 and P0299 [dasboot72]
Feb 16, 2010 (5:33 am)
This helps a lot, will driving till I get the issues resolve cause any damage to the engine/car or can i drive with the issues this way? I am away from home for work and can probably get the vacuum issue dealt with. Is the part for the p1250 issue dealer or auto parts store.
#51 of 118 Re: Error code P1250 and P0299 [jeepon]
Feb 16, 2010 (6:25 am)
I doubt you will find that solonoid in the aftermarket, and most likely a dealer would have to order it due to the small number of Liberty dielsels on the road. Also as far as driving it goes, you may experience performance issues when the EGR sticks but no damage will result.
#52 of 118 Re: Error code P1250 and P0299 [dasboot72]
Feb 16, 2010 (7:28 am)
I talked to the dealer ship and they had no clue what part I was asking for. I talked to the service dept. and they did not recognize the P1250 code (I donít know why). Is the vacuum reservoir part of the egr control ckt. or would you a source to find a part number?
#53 of 118 Re: Error code P1250 and P0299 [jeepon]
Feb 16, 2010 (11:52 am)
I looked up the part myself and the problem is that parts catalogs call things different names than service manuals. The best thing you could do is locate the solonoid as I described it to you and see if it has a part number on it. Aside from that it looks to me like the parts catalog is calling it a Vaccum electric modulator. The Part Number for that is 52109543AA. I am about 95% sure that is the Vac Solonoid. Like I said though, try to see if a part number is on the old one, if not go with my part number.
#54 of 118 Re: Error code P1250 and P0299 [dasboot72]
Feb 17, 2010 (8:51 am)
You can plug the vacuum line and remove the solenoid until you get the new one.