Network, generic

U0060 Vehicle Communication Bus D (-) Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0060 stands for a break in the (-) line of Vehicle Communication Bus D, CAN-Low on a two-wire CAN such as Bentley's private chassis network. Nodes cut off by the break still see CAN-High move, but a high-speed receiver judges only the voltage difference between both wires, so frames from the other side become unreadable to them. NXP notes that a high-speed transceiver has no way to detect a line interruption itself, which leaves time-outs and missing acknowledgements as the evidence. NXP also designed the wake-up detection of its TJA1041 so that a CAN-Low interruption causes no unwanted wake-up while the bus goes to sleep. No manufacturer documents U0060 publicly. Test CAN-Low continuity between the modules, starting with connectors recently opened.

Likely causes

(-) wire of Bus D broken in the harness
Connector not fully latched after work on the vehicle
Corroded terminal opening the (-) line

Symptoms

  • Functions of modules beyond the break fail
  • Lost-communication codes for individual modules on Bus D

Repair estimate

DifficultyHardWorkshop job
Parts and labour€60–700
Time0.5–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

bus d wiringmodule connector

Related codes

U0042U0051U0055U0057U0061

References: nxp.com, nxp.com, static.nhtsa.gov.