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Service bulletin NTB20-032

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10174750
Published by NHTSA2020-05-06
Manufacturer's numberNTB20-032
Manufacturer's date2020-04-23
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

2020 SENTRA; REMOTE ENGINE START STOPS RESPONDING AND DTC P161F STORED SERVICE INFORMATION The remote engine start (RES) may stop responding and DTC P161F will store in the ECM if RES is performed more than once in quick succession. EXAMPLE: 1. The RES is activated, 2. The ignition is turned OFF; either by RES timer or directly by the start button or key, 3. Within 10 seconds of performing steps 1 and 2, the ignition is turned ON with the RES, start button or key. - When using the RES feature, at least 10 seconds, or more, must elapse between ignition cycles. - If DTC P161F is stored, erase the DTC and Do Not replace the ECM. NOTE: If a customer states the RES stopped responding on a third consecutive activation attempt, please inform them the vehicle allows the RES to be performed only twice consecutively, and must be driven in excess of 5 mph before a third attempt can be performed.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Trouble codes named

P161F

Vehicles listed
NISSAN SENTRA2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
NTB25-0052025-01-30. Service bulletin. SERVICE INFORMATION If one of the APPLIED VEHICLES has DTC P2100 for “ETC MOT PWR-B1” or P2101 for “ETC FNCTN/CIRC-B1” stored in the Engine Control Module (ECM) with a customer complaint of loss of power, • Perform the revised Electronic Service Manual (ESM) procedure noted on page 2 for "PERFORM DTC CONFIRMATION PROCEDURE." HINT: This revised procedure will be added to the ESM in a future update.
NTB24-0452024-09-10. Service bulletin. ENGINE SUPPORT TOOLS APPLIED VEHICLES: 2020-2024 Sentra (B18) SERVICE INFORMATION A new Engine Support Bracket is now available to allow the CVT to be removed from the APPLIED VEHICLES without having to remove the engine. The procedure in this bulletin is different from the procedure currently in the ESM, which will be updated with this information at a later date. Please refer to the SERVICE PROCEDURE in this bulletin for information on how to use these new tools.
NTB22-0962022-11-12. Service bulletin. LOSS OF POWER, ENGINE NOISE, AND/OR BATTERY LIGHT ON IF YOU CONFIRM The customer describes one, or more, of the following: • Loss of power • Loud noise from the front of vehicle/engine area while running • The battery light is ON AND • It is confirmed that the noise is coming from the generator (alternator) ACTION Replace the Drive Belt Auto Tensioner, the Alternator, and the associated Drive Belt listed in the PARTS INFORMATION on the last page.
NTB22-067A2022-11-07. Service bulletin. MIL ON WITH DTC P0401 AND/OR P0404 STORED IN THE ECM This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0672022-08-24. Service bulletin. MIL ON WITH DTC P0401 AND/OR P0404 STORED IN THE ECM IF YOU CONFIRM The MIL is ON and DTC P0401 (EGR A FLOW INSUFFICIENT) and/or P0404 (EGR A CONTROL) is stored in the ECM. AND There are no drivability concerns. ACTION 1. Confirm the current ECM part number. 2. Reprogram the ECM, if applicable.
NTB22-0262022-06-08. Service bulletin. SERVICE INFORMATION FOR FUEL GAUGE INACCURATE WITH DTCS STORED IN ECM SERVICE INFORMATION If a fuel level sensor has been diagnosed as sending an incorrect level signal, and one or more of the following DTCs are stored in the ECM, do not replace the entire “Fuel Level Sensor Unit, Fuel Filter and Fuel Pump Assembly” (fuel pump assembly). The fuel level sensor can be replaced separately. • P0460 (FUEL LEV SEN SLOSH) • P0461 (FUEL LEVEL SENSOR) • P0462 (FUEL LEVL SEN/CIRC) • P0463 (FUEL LEVL SEN/CIRC) NOTE: Warranty claims referring to fuel level issues that result in the replacement of the entire fuel pump assembly will be charged back.
NTB17-082E2022-03-12. Service bulletin. DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB13-097J2022-03-12. Service bulletin. EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB21-0272021-05-08. Service bulletin. MIL ON WITH DTC P062F AND/OR P0603 STORED IF YOU CONFIRM The MIL is ON and DTC P062F (EEPROM) and/or P0603 (ECM BACK UP/CIRCUIT) is stored, And The customer stated the vehicle was recently started after sitting for an extended period of time (i.e., the battery voltage was low while attempting to start the engine). ACTION 1. Test the vehicle’s 12 volt battery using the Midtronics DSS-5000. Recharge or replace the battery if necessary. 2. Erase all DTCs.
NTB20-0842020-12-09. Service bulletin. INTELLIGENT KEY UNIT DTC P161D STORED IN THE ECM SERVICE INFORMATION DTC P161D (IMMOBILIZER) will not cause: • The MIL to turn ON. • The Remote Engine Start to become inoperative. • The “No Key Detected” message to appear. • An impact to any of the vehicle’s functions or performance. If other DTCs are stored with P161D, perform the diagnosis and repair procedures, outlined in the ESM, for the other DTCs first. • After the other DTCs have been resolved and P161D does not clear, proceed with the diagnosis and repair, outlined in the ESM, for DTC P161D.