SYSTEM CHECK DRIVING PATTERN

1. Connect the OBD II scan tool or TOYOTA hand-held tester to the DLC3.
2. Start and warm up the engine with all accessories switched OFF .
3. Run the vehicle at 60 - 80 km/h (38 - 50 mph) for 3 min . or more.
4. Idle the engine for about 2 min .
5. Do steps (3) and (4) again.
6. Stop at safe place and turn the ignition switch OFF .
7. Do steps (2) to (5) again.
8. Check the READINESS TESTS mode on the OBD II scan tool or TOYOTA hand-held tester. If COMPL is displayed and the MIL does not light up, the system is normal. If INCMPL is displayed and the MIL does not light up, run the vehicle again and check it. HINT : INCMPL is displayed when either condition (a) or (b) exists.

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  1. The system check is incomplete.
  2. There is a malfunction in the system. If there is a malfunction in the system, the MIL will light up after steps (2) to (5) above are done. (2 trip detection logic)

HINT :

• If DTC P0106 (Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction), P0106 (Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem) and P0401 (Exhaust Gas Recirculation Flow Insufficient Detected) are output simultaneously, perform troubleshooting of DTC P0105 first.
• If DTC P0401 (Exhaust Gas Recirculation Flow Insufficient Detected) and P0402 (Exhaust Gas Recirculation Flow Excessive Detected) are output simultaneously, perform troubleshooting of DTC P0402 first.
• Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel ratio lean or rich, etc. at the time of the malfunction.

Check condition of vacuum hose and egr hose.

Check VSV for EGR. (little vacuum valve with a vacuum line running to it).

Check EGR system.

Check EGR vacuum modulator.

Check EGR valve.

Check map sensor.(if equipped)

It won't get any better then this man. This should help you out with your issue. There is no more info. Other then using throttle body cleaner to clean the EGR tube. Inspect ,clean,and replace if needed I can't help you out anymore.