Altima 2007-2009

3.5L V6 VIN - Auto CVT 27

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Trouble Code: U121C



AV Control Unit (HDD Access)

Possible Causes:



If the music box function has no malfunctions, then there is a possibility of the detection of a temporary malfunction.
 
Replace the AV control unit if the malfunction occurs constantly.
 

Trouble Code: U121D



AV Control Unit (DSP Connection)

Possible Causes:



If a disc can be played, then there is a possibility of the detection of a temporary malfunction.
 
Replace the AV control unit if the malfunction occurs constantly.
 

Trouble Code: U121E



AV Control Unit

Possible Causes:



If a disc can be played, then there is a possibility of the detection of a temporary malfunction.
 
Replace the AV control unit if the malfunction occurs constantly.
 

Trouble Code: U1225



AV Control Unit (USB Controller)

Possible Causes:



Check that the connection to the USB connector is normal.
 

Trouble Code: U1227



AV Control Unit (DVD Comm)

Possible Causes:



If DVD can be played, then there is a possibility of the detection of a temporary malfunction.
 
Replace the AV control unit if the malfunction occurs constantly.
 

Trouble Code: U1228



AV Control Unit (Sub CPU Conn)

Possible Causes:



Replace the AV control unit if the malfunction occurs constantly.
 

Trouble Code: U1229



AV Control Unit (iPod Certification)

Possible Causes:



Replace the AV control unit if the malfunction occurs constantly
 

Trouble Code: U122A



AV Control Unit (Config Unfinish)

Possible Causes:



Write configuration data with -MULTI AV- of CONSULT-III.
 

Trouble Code: U122E



AV Control Unit (Built-in Audio Conn)

Possible Causes:



Replace the AV control unit if the malfunction occurs constantly.
 

Trouble Code: U1244



GPS Antenna

Possible Causes:



Check the connection of the GPS antenna connector.
 

Trouble Code: U1263



USB

Possible Causes:



Check USB harness between the AV control unit and USB connector.
 

Trouble Code: U1310



AV Control Unit

Possible Causes:



Replace AV control unit. If the malfunction occurs constantly.
 

 
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