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Home >> Toyota >> 2014 >> Prius Two >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 53 (Engine Control System (Diagnostic Code (P0010 - P0300)) - PRIUS (Plug-In)) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1) [10/2013 - ] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying Engine Switch / Scantool Operations Graph
GTY380347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the power switch off and wait for at least 30 seconds.
  5. Turn the power switch on (IG) and turn the Techstream on [A].
  6. Press the EV/HV mode selection switch to select HV mode.
  7. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE [10/2013 - ] .
  8. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off [B].
  9. With the engine warmed up, idle the engine for 5 minutes or more [C].
  10. Drive the vehicle at a speed between 75 and 120 km/h (47 and 75 mph) for 5 minutes or more [D].
    WARNING:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  11. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
  12. Read the pending DTCs.

    HINT: 

    If a pending DTC is output, the system is malfunctioning.

  13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to DTC CHECK / CLEAR [10/2013 - ] .

    HINT: 

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.