The additional code is a calibration code that specifies what emissions equipment you have.
Here are the emission components for that calibration.
CALIBRATION PARTS LIST
NAME/DESCRIPTION ENGINEERING NO. SERVICE NO.
VALVE ASSY., (Thermactor Air By-Pass) E8TE 9B289-AA E8TZ 9B289-A
SENSOR, (EGR Valve) E7TF 9G428-AA E7TZ 9G428-A
RESERVOIR ASSY., (EGR Vacuum) D5TE 9E453-AA D5TZ 9E453-A
CONTROL ASSY., (EGR Vacuum Regulator) E53E 9J459-AA E63Z 9J459-A
VALVE ASSY., (Thermactor Air Control Solenoid Vacuum) E7TE 9H465-AA E7TZ 9H465-A
VALVE ASSY., (Thermactor Air Control Solenoid Vacuum) E7TE 9H465-BA E7TZ 9H465-B
SENSOR ASSY., (Exhaust Gas Oxygen) E93F 9F472-AA,DA, EA F03Z 9F472-A
SENSOR ASSY., (Exhaust Gas Oxygen) E73F 9F472-AA,BA, CA E73Z 9F472-A
SENSOR ASSY., (Exhaust Gas Oxygen) E9SF 9F472-BA F0SZ 9F472-B
SENSOR ASSY., (Exhaust Gas Oxygen) E77F 9F472-AA,BA E7TF 9F472-AA E7TZ 9F472-A
SENSOR ASSY., (Exhaust Gas Oxygen) E9SF 9F472-AA E97F 9F472-AA F0SZ 9F472-A
SENSOR ASSY., (Exhaust Gas Oxygen) F07F 9F472-AA F0TZ 9F472-A
SENSOR ASSY., (Manifold Absolute Pressure) E7EF 9F479-A1A,A2A E7FZ 9F479-A
VALVE ASSY., (EGR Pressure External) E7TE 9F483-F2A,F4A E7TZ 9F483-F
PUMP ASSY., (Thermactor) E5TE 9A486-DB E5TZ 9A486-D
VALVE ASSY., (Thermactor Check - 3/4-14 Thread One End - Hose Nipple One End - Upstream) E9VZ 9A487-A
VALVE ASSY., (Thermactor Check - Hose Nipple One End - Press In Tube Other End - Downstream) EZ 9A487-A
VALVE ASSY., (Thermactor Control) E47E 9F491-BA E3TZ 9F491-A
INJECTOR ASSY., (Fuel) E5TE 9F593-A3B E8TZ 9F593-D
VALVE ASSY., (Throttle Air By-Pass) E9TE 9F715-BA F0TE 9F715-B1A E9TZ 9F715-B
SENSOR ASSY., (Speed) E3AF 9E731-AB E3AZ 9E731-A
REGULATOR ASSY., (Fuel Charging Pressure) E7EE 9C968-AA E77E 9C968-AA E7FZ 9C968-A
POTENTIOMETER ASSY., (Throttle Position Sensor) E7TF 9B989-CA E7TZ 9B989-D
DISTRIBUTOR ASSY.) E5TE 12127-AA E5TZ 12127-A
SENSOR ASSY., (Engine Electronic Control Coolant Temperature) E4AF 12A648-AA E1AZ 12A648-A
PROCESSOR AND CALIBRATOR ASSY., (EEC-IV) E9TF 12A650-AM1A, AM2A E9TZ 12A650-AMA
SENSOR ASSY., (Air Charge Temperature) E4AF 12A697-AA E1AZ 12A697-A
SENSOR ASSY., (Engine Spark Knock Intensity) E3AF 12A699-AA E3AZ 12A699-A
The code you are looking for that will be more helpful identifying the EEC is the Catch code. This code is typically located on a small sticker in the door jamb on the A pillar. It looks like this.
It is also located on the EEC.
