U0101 on Nissan vehicles A module has stopped hearing from the transmission control module
U0101 is named on 5 Nissan model years (2020–2021): 9 manufacturer filings and 0 owner reports in NHTSA’s files, across Frontier, Titan, Titan XD.
Which Nissan model years name U0101
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2021 Nissan Titan | Engine | 2 | — |
| 2021 Nissan Titan XD | Engine | 2 | — |
| 2020 Nissan Frontier | Engine | 2 | — |
| 2020 Nissan Titan | Engine | 2 | — |
| 2020 Nissan Titan XD | Electrical System | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Nissan filings that name U0101
Source: NHTSA manufacturer communicationsBulletins and campaigns Nissan filed with NHTSA whose summary names U0101. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- NTB21-002 Service bulletin2021-01-06 · Engine And Engine Cooling
- 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
- NTB21-002A Service bulletin2022-10-06 · Electrical System
- TCM COMMUNICATION ERROR CAUSING A NO START CONDITION SERVICE INFORMATION If a customer states the engine will not crank and will not start (may be intermittent) and DTC U0101 (Lost Comm TCM) is stored in the ECU (ENGINE), and/or stored in the SCU (SHIFT) as PAST or CURRENT, OR The TCM shows as “UNKWN” in the PRESENT column, or “0” in the PAST column, under the CAN DIAG SUPPORT MNTR tab i
- NTB21-001 Service bulletin2021-01-06 · Engine And Engine Cooling
- 2020-2021 TITAN/TITAN XD; 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 the Shifter Control Unit (SCU). This DTC may be in a PAST or CURRENT status. Or The TCM shows “UNKWN” in the PRE
- NTB21-001B Service bulletin2022-10-06 · Electrical System
- TCM COMMUNICATION ERROR CAUSING A NO START CONDITION SERVICE INFORMATION If a customer states the engine will not crank and will not start (may be intermittent) and DTC U0101 (Lost Comm TCM) is stored in the ECU (ENGINE), and/or stored in the SCU (SHIFT) as PAST or CURRENT, OR The TCM shows as “UNKWN” in the PRESENT column, or “0” in the PAST column, under the CAN DIAG SUPPORT MNTR tab i
What U0101 means
Source: SAE J2012 / OBD-IIA module has stopped hearing from the transmission control module.
A stored code names the test that failed, never the part that caused it. The record above is what Nissan and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs U0101 a known problem on Nissan vehicles?
It is a documented one: NHTSA's files hold 9 manufacturer filings and 0 owner reports naming U0101 on 5 Nissan model years (2020–2021). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Nissan models does U0101 appear on most?
2020 Frontier (2 documents), 2021 Titan (2 documents), 2020 Titan (2 documents).
Does U0101 on a Nissan mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.