1998 Sonata - Step By Step

IMPORTANT
In the case of the 1998 Sonata, in order to set the monitors to READY, only the diagnosis for each of the monitors need to be run on any drive (It is still necessary to run the diagnosis on at least two consecutive, successful Drive Cycles.). That is, the monitors are NOT linked together. They can be run independently and will display as READY or NOT READY independently (unlike the 1996 & 1997 Model Year Sonata).

EVAP. PURGE AND EGR (MODE 1):

^ In order to set the Evap. Purge and EGR monitors to READY, drive MODE 1 (as described previously in this TSB).

NOTE
It is NOT necessary to drive MODE 2 in order to run the Evap. Purge and EGR monitors.

^ After the first successful duplication of MODE 1, turn the ignition key to the OFF position and wait 30 seconds before driving MODE 1 a second time (second Drive Cycle).

^ After successfully completing two Drive Cycles, the Readiness Monitor should indicate READY.

^ After the conclusion of the second Drive Cycle, turn the engine off (Key in the OFF position) and wait 30 seconds before turning the key to the ON position.

Using the Hi-Scan Pro, check to see if the Readiness Monitors for EVAP. PURGE and EGR indicate READY.

^ If not, then check to see if there are any DTC codes or if the Check Engine Light is ON. If yes, then repair the vehicle. After repair is completed, conduct the Drive Cycle two times.

^ If after the conclusion of the second Drive Cycle, the Readiness Monitors for EVAP. PURGE and EGR still indicate NOT READY, then conduct the Drive Cycle again and check the Readiness Codes again (the previous attempts at the Drive Cycle may not have been successfully completed).

CATALYST, 02 SENSOR AND 02 SENSOR HEATER (MODE 2):

^ In order to set the Catalyst, 02 Sensor and 02 Sensor Heater monitors to READY, drive MODE 2 (as described previously in this TSB) at least four (4) times.

NOTE
It is NOT necessary to drive MODE 1 in order to run the Catalyst, 02 Sensor and 02 Sensor Heater monitors.

^ After the first successful duplication of MODE 2 at least four times turn the ignition key to the OFF position and wait 30 seconds before driving MODE 2 at least four times again (second Drive Cycle).

^ After successfully completing two Drive Cycles, the Readiness Monitor should indicate READY.

^ After the conclusion of the second Drive Cycle, turn the engine off (Key in the OFF position) and wait 30 seconds before turning the key to the ON position. Using the Hi-Scan Pro, check to see if the Readiness Monitors for Catalyst, 02 Sensor and 02 Sensor Heater indicate READY.

^ If not, then check to see if there are any DTC codes or if the Check Engine Light is ON. If yes, then repair the vehicle. After repair is completed, conduct the Drive Cycle two times.

^ If after the conclusion of the second Drive Cycle, the Readiness Monitors for Catalyst, 02 Sensor and 02 Sensor Heater still indicate NOT READY, then conduct the Drive Cycle again and check the Readiness Codes again (the previous attempts at the Drive Cycle may not have been successfully completed).