# Service bulletin NTB21\-002A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10222865
- Published by NHTSA: 2022\-10\-14
- Manufacturer's number: NTB21\-002A
- Manufacturer's date: 2022\-10\-06
- NHTSA component: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

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 in the ECU or SCU in C\-III plus. • Please check Service COMM or Dealer Business Systems \(DBS\) National Service History to confirm if campaign R22B1 or R22A9 has been applied. 1. Has campaign R22B1 or R22A9 already been completed? No: Complete the related campaign bulletin. Yes: Proceed to step 2. 2. Refer to the ESM for further diagnostic information not covered by this bulletin. NOTE: If the Park indicator is not displayed in the Driver Information Center \(Figure 1\) and C\-III plus does not display the current TCM part number after a 2 minute wait with the ignition ON, engine OFF, this TSB does not apply. Refer to the ESM for further diagnostic information. This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10222865-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10222865-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine

## Trouble codes named

U0101

## Vehicles listed

- 2020 NISSAN FRONTIER

## Other bulletins for the same vehicles and component

- [NTB17\-127C](/bulletins/11004963.md), 2024-07-19, Service bulletin: ELECTRICAL SYSTEM. INTELLIGENT KEY INITIALIZATION PROCEDURE STOPS OR WILL NOT CONTINUE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
- [NTB13\-107G](/bulletins/11004962.md), 2024-07-19, Service bulletin: ELECTRICAL SYSTEM. VEHICLE KEY NOT DETECTED / AUTHENTICATED, ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [NTB13\-027D](/bulletins/11004961.md), 2024-07-19, Service bulletin: ELECTRICAL SYSTEM. CAN COMMUNICATION – NETWORK DIAGNOSTIC FLOW CHART This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [NTB10\-066C](/bulletins/11004960.md), 2024-07-19, Service bulletin: ELECTRICAL SYSTEM. CAN COMMUNICATION CODES – DIAGNOSTIC TIPS AND GUIDELINES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [NTB23\-018G](/bulletins/10251535.md), 2024-03-08, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. Please discard previous versions of NTB23\-018.
- [NTB23\-018F](/bulletins/10249914.md), 2024-02-08, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. HINT: Initially, the Infotainment Software Update Utility will be available only on the CONSULT PC version of ASIST. The Utility will be added to ASIST WEB at a later date. Please discard previous versions of NTB23\-018.
- [NTB20\-016G](/bulletins/10249901.md), 2024-02-08, Service bulletin: ELECTRICAL SYSTEM. RADIO INTERMITTENTLY REBOOTS DURING AUDIO PLAYBACK VIA BLUETOOTH CONNECTED IPHONE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [NTB23\-018E](/bulletins/10242148.md), 2023-09-09, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [NTB23\-018D](/bulletins/10242141.md), 2023-09-09, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [NTB23\-053](/bulletins/10239062.md), 2023-07-11, Service bulletin: ELECTRICAL SYSTEM. SILICONE\-BASED LUBRICANT OR GREASE CAN DAMAGE ELECTRICAL COMPONENTS SERVICE INFORMATION Do not apply Silicone\-based lubricants or grease to, or around, any interior electrical components. To avoid the risk of death or severe personal injury, do not directly spray Silicone\-based lubricant or grease, or inadvertently overspray Silicone\-based lubricant or grease onto any interior electrical components. These types of lubricants can be detrimental to the proper operation of electrical components.

JSON: [/v1/bulletins/10222865](/v1/bulletins/10222865)

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