Code U0101 and hard shift into drive AT light on on dash

2004 MAZDA 6
125,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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ELLISONE
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Car started shifting hard into drive and the AT light was on checked codes and got a U0101 but I noticed something when I cleared the code the car would shift into all gears normally but then light would come back on after about five min and hard shift into drive would start up again and as soon as I would clear the code again it would start working normally again for five min. Did this four times in a row can you tell me if this is pointing to a specific problem or area of the transmission like the failure of the TCM?
Aug 12, 2015 at 7:46 PM
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KHLOW2008
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This code is a fault of communication error between the PCM and TCM, Most likely the TCM is faulty. Start by checking the fuses for the TCM.
Aug 13, 2015 at 8:48 AM
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ELLISONE
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Thanks for your help KHLow2008
Aug 13, 2015 at 1:30 PM
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KHLOW2008
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You're welcome. Try disconnecting the TCM and PCM and reconnect to see if it works. Check for contaminations at the connectors and clean if necessary..
Aug 14, 2015 at 6:20 AM
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ELLISONE
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Thanks again and I will try that.
Aug 14, 2015 at 12:16 PM
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KHLOW2008
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Good luck.
Aug 15, 2015 at 8:39 AM