Service bulletin NTB14-044b

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)
Type	Service bulletin
NHTSA id	10155157
Published by NHTSA	2019-03-25
Manufacturer's number	NTB14-044b
Manufacturer's date	2019-02-12
NHTSA component	ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

2013 ? 2018 SENTRA; MIL ON WITH DTC P0448 This bulletin has been amended. See Amendment History on the last page. Please discard previous versions of this bulletin.

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, Exhaust and emissions

Trouble codes named

P0448

Vehicles listed
NISSAN SENTRA	2013, 2014, 2015, 2016, 2017, 2018

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
NTB22-026	2022-06-08. 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.
NTB22-007A	2022-05-20. Service bulletin. 2013-2016 ALTIMA AND SENTRA; REAR OXYGEN SENSOR VOLTAGE INSPECTION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB15-049X	2022-05-20. Service bulletin. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
P1A25_ 2013-16 S	2022-03-15. Service bulletin. Engine Control Module (ECM) Reprogram and Oxygen Sensor Voltage Inspection Voluntary Emission Service Campaign Dealer Announcement: Nissan is conducting a Voluntary Emission Service Campaign to reprogram the Engine Control Module (ECM) and inspect the oxygen (O2) sensor voltage on certain MY2013-2016 Nissan Sentra SULEV vehicles identified in Service Comm. If the voltage is OK, no repair is necessary. If the voltage check results are “No Go”, dealers will diagnose and repair per the electronic service manual (ESM), and remedy any diagnostic trouble codes (DTCs) that may have been masked by a failure to detect the short circuit to ground condition. The current level software installed on the affected vehicles may not detect a rear oxygen (O2) sensor short to ground (SCG) condition. Undetected SCG may result in failure to pass emissions testing. What Dealers Should Do: 1.Verify if vehicles are affected by this Voluntary Emission Service Campaign using Service Comm or DBS National Service History – Open Campaigns I.D. P1A25. 2.Dealers are requested to remedy any affected vehicles in dealer pre-owned inventory to ensure customer satisfaction. 3.Dealers should use NTB22-006 to correct any vehicles subject to this campaign. 4.Once repaired, dealers should submit the claim, using the claims coding provided, and release the vehicle.
NTB22-007	2022-03-15. Service bulletin. 2013-2016 ALTIMA AND SENTRA; REAR OXYGEN SENSOR VOLTAGE INSPECTION SERVICE INFORMATION Nissan is committed to providing the highest levels of product quality and customer satisfaction. Therefore, Nissan is extending the emission warranty on the Rear Oxygen Sensor in the case of a short-to-ground condition to 20 Years or 200,000 miles, whichever occurs first. All other warranty terms, limitations, and conditions remain unchanged. During the warranty extension period, customers are eligible for annual Rear Oxygen Sensor voltage checks, upon request, to determine if a Rear Oxygen Sensor short-toground condition exists. If a Rear Oxygen Sensor short-to-ground condition does exist, Nissan will inspect and repair or replace, as necessary, the sensor or wiring and inspect for the existence of specific Diagnostic Trouble Codes (DTCs) for issues that may have been previously unidentified due to the short-to-ground condition. Only if one of the DTCs in Table A are first found after a short-to-ground repair, the corresponding issue(s) will also be corrected according to the service manual at no charge for parts and labor as part of this warranty extension.
NTB22-006	2022-03-15. Service bulletin. VOLUNTARY EMISSION SERVICE CAMPAIGN 2013-2016 SENTRA; ECM REPROGRAM AND OXYGEN SENSOR VOLTAGE INSPECTION INTRODUCTION Nissan is conducting this voluntary emission service campaign, on certain specific model year 2013-2016 Sentra vehicles, to reprogram the ECM (if applicable), and then inspect the oxygen (O2) sensor voltage. This service will be performed at no charge to the customer for parts or labor. IDENTIFICATION NUMBER Nissan has assigned identification number P1A25 to this campaign. This number must appear on all communication and documentation of any nature dealing with this campaign. DEALER RESPONSIBILITY Dealers are to repair vehicles falling within range of this campaign that enter the service department. This includes vehicles purchased from private parties, vehicles presented by transient (tourist) owners, and vehicles in a dealer’s inventory.
NTB17-082E	2022-03-12. 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.
NTB13-097J	2022-03-12. 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.
NTB13-027C	2022-03-12. Service bulletin. 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.
NTB18-077C	2021-07-12. Service bulletin. MIL ON WITH DTC P0776, P1715 AND MAY HAVE HESITATION AND/OR LACK OF POWER This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.