2020 FRONTIER; TCM COMMUNICATION ERROR CAUSING A NO START CONDITION IF YOU CONFIRM The customer states the...

Bulletin number

NTB21-002

Component

Engine and engine cooling

Summary

2020 FRONTIER; TCM COMMUNICATION ERROR CAUSING A NO START CONDITION IF YOU CONFIRM The customer states the engine will not crank and will not start. (The incident may be intermittent.) And There is a U0101 DTC (Lost Comm TCM) in the Engine Control Unit (ECU) and/or Shifter Control Unit (SCU). This DTC may be in a PAST or CURRENT status. Or The TCM shows “UNKWN” in the PRESENT column or “0” in the PAST column under the CAN DIAG SUPPORT MNTR tab within the ECU (ENGINE) or the SCU (SHIFT) in CONSULT-III plus (C-III plus). See Figure 1 and Figure 2.

Owners of these vehicles have filed 5 complaints in the engine category.