NTB21-034

Classification:
Reference:
HA21-001
Date:
NTB21-034
April 22, 2021
2019-2021 ALTIMA AND 2021 ROGUE;
AC INOPERATIVE WITH DTC B20C8-14 STORED
2019-2021 Altima (L34)
2021 Rogue (T33)
APPLIED VEHICLES:
IF YOU CONFIRM
The AC compressor is not engaging when the AC is in the ON position as indicated by the
yellow illumination on the AC button,
And
DTC B20C8-14 ECV (ELECTRICAL CONTROL VALVE) is stored in the IPDM.
SERVICE PROCEDURE
1. Clear the DTC, and follow the DTC CONFIRMATION PROCEDURE in the ESM.


If DTC B20C8-14 is past, AC compressor operation is inhibited until the DTC is
cleared.
If DTC B20C8-14 returns after being cleared (either Current or Past status),
follow the ESM diagnosis procedure.
 For models with Automatic Air Conditioning, go to section: VENTILATION,
HEATER & AIR CONDITIONER > HEATER & AIR CONDITIONING
CONTROL SYSTEM > AUTOMATIC AIR CONDITIONING > DTC/CIRCUIT
DIAGNOSIS > B20C8-14 ECV (ELECTRICAL CONTROL VALVE).
 For models with Manual Air Conditioning, go to section: VENTILATION,
HEATER & AIR CONDITIONER > HEATER & AIR CONDITIONING
CONTROL SYSTEM > MANUAL AIR CONDITIONING > DTC/CIRCUIT
DIAGNOSIS > B20C8-14 ECV (ELECTRICAL CONTROL VALVE).
AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
April 22, 2021
NTB21-034
DESCRIPTION
Original bulletin published
Nissan Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are
properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.
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