SFI SYSTEM, Diagnostic DTC:P1049

DTC Code DTC Name
P1049 VALVEMATIC Circuit B1

DESCRIPTION

The EDU in the continuously variable valve lift controller assembly monitors the driver circuit in the continuously variable valve lift controller assembly and detects malfunctions.

DTC No.

DTC Detection Condition

Trouble Area

P1049

EDU internal error (1 trip detection logic).

Continuously variable valve lift controller assembly

CAUTION / NOTICE / HINT

Note:

When one of the following DTCs is output and the MIL is illuminated, actuator position learning is performed during the next trip. After the system returns to normal, actuator position learning is performed during the next trip and the MIL remains illuminated until learning is complete.

Actuator position learning is performed when these DTCs are output.

P1049, P104A, P1055, P2646, P2647, P2648, P2649, P264A, U011B
Tip:

  • If DTC P104A is output at the same time as DTC P1049, disregard DTC P104A and proceed with the inspection.

  • After performing repairs, perform the following procedures and check that DTCs are not output again.

  1. Connect the GTS to the DLC3.

  2. Start the engine and warm it up.

  3. Turn the GTS on.

  4. Clear the DTCs (Click here).

  5. Turn the ignition switch off and wait 10 seconds.

  6. Start the engine and idle it for 20 seconds.

  7. Clear the DTCs (Click here).

  8. Turn the ignition switch off and wait 10 seconds.

  9. Start the engine and idle it for 20 seconds.

  10. Turn the ignition switch off and wait 10 seconds.

  11. Turn the ignition switch to ON.

  12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  13. Read the DTCs.

  • After using the GTS to perform minimum valve lift learning, keep the engine idling for 30 seconds to complete learning. Otherwise, the VALVEMATIC system may not operate normally, causing poor acceleration, etc.

PROCEDURE

  1. REPLACE CONTINUOUSLY VARIABLE VALVE LIFT CONTROLLER ASSEMBLY

    1. Replace the continuously variable valve lift controller assembly (Click here).

      Tip:

      Perform "Inspection After Repair" after replacing the continuously variable valve lift controller assembly (Click here).

    END