Lost Communication with Body Control Module B
2007-2012 Nissan Altima 2.5L I4
Description
Cannot communicate with the secondary body control module.
Symptoms
- Partial body electronics failure
- Some lights not working
- Partial lock/unlock failure
- Specific body features down
Common Causes
- BCM B failure
- CAN bus wiring issue
- Module power loss
- Fuse blown
- Water damage
Diagnostic Steps
- Check BCM B fuse
- Test power and ground
- Check CAN wiring
- Inspect for water damage
- Check BCM B connector
Repair Notes
Check fuses and look for water intrusion. Secondary BCMs are common on larger vehicles.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0142 on Other Vehicles
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code U0142 mean on a 2007-2012 Nissan Altima?
U0142 stands for "Lost Communication with Body Control Module B". Cannot communicate with the secondary body control module.
What are the symptoms of U0142 on a Nissan Altima?
Common symptoms of U0142 include: Partial body electronics failure, Some lights not working, Partial lock/unlock failure, Specific body features down.
What causes U0142 on a 2007-2012 Nissan Altima?
Common causes of U0142 include: BCM B failure, CAN bus wiring issue, Module power loss, Fuse blown, Water damage.