Mechanics

ODB NOT READY STATUS

1996 Land Rover Discovery

Computer problem
1996 Land Rover Discovery 6 cyl Two Wheel Drive Manual 150000 miles

The vehicle failed emissions the first time around.I had a tune up oil change and work done to clear MIL light. The second go through registered ODB not ready.I then drove the car 30 miles in distance with freeway driving as advised. The car still shows ODB not ready. What is the appropriate drive cycle?
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Jflesey
January 15, 2010.




Fill up the fuel tank. Do the following drive cycle. (You can ignore the scan tool parts) just do follow the driving procedure

Drive in stop-and-go traffic with at least 4 idle periods (30 seconds each) while observing the status of the OBD-II monitor on the scan tool. If the Exhaust Gas Recirculation (EGR), Heated Oxygen Sensor (HO2S), Evaporative (EVAP) emission, secondary Air (AIR) (if applicable) or catalyst efficiency monitor have not completed, drive on the highway at a constant speed over 40 mph not to exceed 65 mph for up to 15 minutes. Heavy accelerations, sudden decelerations and wide open throttles are not recommended. If the scan tool sends out a three pulse beep at any time, the OBD-II drive cycle has completed.
Drive in stop-and-go traffic with at least 4 idle periods (30 seconds each) while observing the status of the OBD-II monitor on the scan tool. If the Exhaust Gas Recirculation (EGR), Heated Oxygen Sensor (HO2S), Evaporative (EVAP) emission, secondary Air (AIR) (if applicable) or catalyst efficiency monitor have not completed, drive on the highway at a constant speed over 40 mph not to exceed 65 mph for up to 15 minutes. Heavy accelerations, sudden decelerations and wide open throttles are not recommended. If the scan tool sends out a three pulse beep at any time, the OBD-II drive cycle has completed.

If the EGR, HO2S, EVAP, secondary AIR (if applicable) or catalyst efficiency monitor has not completed, perform the corresponding monitor verification drive cycle. See MONITOR REPAIR VERIFICATION DRIVE CYCLES.
Bring the vehicle to a stop and retrieve Continuous Memory DTCs to verify the DTC P1000 has been erased.
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Dave H
Jan 17, 2010.
Does filling up the gas tank make that much diff? I am hving same problem & have driven over 1,000 miles! My mech says he cant communicate with the computer. Getting frustrated. HELP!

Tiny
Icie1
Feb 12, 2011.

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