2010 Mazda 3 ISport U0101 Code And TCM

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• 2010 Mazda 3 iSport U0101 Code and TCM

Mazda3/Mazdaspeed3 General/Maintenance Discussion of the Mazda3 and MazdaSpeed3 Community Links Pictures & Albums Members Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... 2010 Mazda 3 iSport U0101 Code and TCM Reply Subscribe Thread Tools Search this Thread Nov 20, 2015 | 03:50 PM Share Share Options #1 joelmacdad Thread Starter Registered User Joined: Nov 2015 Posts: 1 2010 Mazda 3 iSport U0101 Code and TCM Long time reader, first time poster.... I have a 2010 Mazda 3 iSport with 96k miles. A couple of nights ago tried to reverse and it "clunked" into gear. AT light, traction light, and CEL come on. Never had this problem before, no hard shifting etc. When I started driving there was little power, stuck in a gear, prob 3rd. No lights for transmission position. I read this is what is called the Mazda 3 "limp" mode and CEL code U0101 appears as "Lost communication with TCM". Is this as simple as finding corrosion, bare wire, along the wiring to/from the TCM? Or is it for sure the TCM itself? Also, where is that TCM? Some posts say its on top of the transmission, others say under the batter box with the Turbine Speed Sensor. I have never flushed transmission fluid, but would dirty fluid (it's really not that bad) cause this? Would a failed solenoid cause the TCM communication loss? Or is this all electrical only to or from the TCM? Quite a bit of info out there, but not much direct resolution. If anyone could tell me exactly where the TCM is on this 2010 Mazda 3 or instructions/video to replace, that would help. Thanks! Reply joelmacdad View Public Profile Find More Posts by joelmacdad Reply Subscribe Related Topics Thread Thread Starter Forum Replies Last Post my 2008 mazda 3 Isport sedan hazel046 Mazda3/Mazdaspeed3 1 Jun 8, 2014 10:35 PM Mazda 3 TCM - 2006 vs 2007 mazdalover99 Mazda3/Mazdaspeed3 0 Aug 13, 2012 04:38 PM Change TCM eagledaddy Mazda Service Info 3 May 31, 2012 12:42 PM 2007 iSport manual transmission cruise control mod fullofzen Mazda3/Mazdaspeed3 0 Jan 18, 2012 03:03 PM Help on '08 Mz3 iSport DraStihK_o8Mz3 Mazda3/Mazdaspeed3 1 Mar 26, 2011 02:22 PM Tags limp, tcm Back to Subforum Mazda3/Mazdaspeed3 View Next Unread Opinions needed Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) Thread Tools Show Printable Version Search this Thread Advanced Search Thread Tools Show Printable Version Email this Page Advanced Search Reply Closed Thread Share

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