2004 Nissan Quest What does code u101 mean?

2004 NISSAN QUEST
229,000 MILES • 6 CYL • 2WD • AUTOMATIC
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NISSANLOVER123
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Hi, well my nissan has gone through over 200k miles of service with no problems except regular maintanance. But my check engine light has come on within the last 2 weeks n I just got it tested today. It pulled a u101 code and a p2138 code. Does anyone know what they mean??? Please help!!
Sep 15, 2010 at 5:23 PM
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RASMATAZ
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U101-Loss of class2 communication with the computer

P2138 - Accelerator Pedal Position Sensor Circuit Range / Performance Problem
Sep 15, 2010 at 5:45 PM
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NISSANLOVER123
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Thanks I appreciate it
Sep 15, 2010 at 5:55 PM