U1900

Scope: 2.5L/3.0L gasoline · System(s): A/CCM –M · Factory MIL flag: N · Default action: CAN circuit: open circuit, short circuit to B+ V, short circuit to ground A/CCM internal CAN fault CAN network fault

Common causes

• CAN Communication Bus Fault

Quick checks

• Confirm freeze-frame and conditions when the code set
• Check module power/grounds and bus wiring before condemning a module

Typical fixes

• General CAN bus error
• check modules on high-speed CAN (ECM, TCM, ABS, Cluster)