Sentra XE L4-1597cc 1.6L DOHC MFI (GA16DE) (1997)
Engine Control Module: All Technical Service Bulletins
Exhaust - Sulfur Odor
Classification:
EC97-021
Reference:
NTB97-075
Date:
November 1, 1997
1995-97 SENTRA EXHAUST ODOR
APPLIED VEHICLE:
1995-97 Sentra
APPLIED ENGINE:
GA16DE
SERVICE INFORMATION
If a Sentra operated in a federal emissions state demonstrates a sulfur or "rotten egg" odor coming from the tailpipe, this condition may be caused by
excessive sulfur in the fuels.
NOTE:
Fuels that contain higher levels of sulfur may be sold in all states except California.
Countermeasure ECMs have been developed for GA16DE engine vehicles to reduce this sulfur odor, which occurs during idle operation.
Important:
These ECMs are for use only in vehicles with customer complaints of sulfur or "rotten egg" odor. All other ECM replacements, for whatever reason,
require use of the "current" part number.
SERVICE PROCEDURE
If a Sentra customer complains of sulfur or "rotten egg" odor, replace the vehicle ECM. Refer to Figure 1 for ECM location. Do not replace the
catalytic converter for this complaint.