Emission Control Systems: Application and ID

DEVICES & SYSTEMS

CAT Three Way Catalyst
PCM Powertrain Control Module
MRL [1] Maintenance Reminder Lamp
EVAP Evaporative Emission Control
EGR Exhaust Gas Recirculation
FR Fuel Pipe Restrictor
OXY [2] Oxygen Sensor
[1][2]PCV Positive Crankcase Ventilation
DI Distributor Ignition
IC Ignition Control

Remarks:

[1] "Service Engine Soon" light

[2] Two Heated Oxygen Sensors (with California emission system NB2)
Two Oxygen Sensors (with Unleaded fuel system NA5 or NN5)