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P2646 on the 2014 Toyota Corolla

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

Bulletins for this model year that name P2646
T-SB-0011-14 Rev2018-04-02. Service bulletin. TSB: Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL ?ON? condition with either one or both of the following Diagnostic Trouble Codes (DTCs): ? P2646 ? A Rocker Arm Actuator System Performance or Stuck Off (Bank 1) ? P265B ? B Rocker Arm Actuator Position Sensor Circuit Range Performance (Bank 1) The Engine Control Module (ECM, SAE term: Powertrain Control Module/PCM) calibration has been revised.
T-SB-0011-142018-04-02. Service bulletin. Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL ?ON? condition with either one or both of the following Diagnostic Trouble Codes (DTCs):. P2646 ? A Rocker Arm Actuator System Performance or Stuck Off (Bank 1). P265B ? B Rocker Arm Actuator Position Sensor Circuit Range Performance (Bank 1) The Engine Control Module (ECM, SAE term: Powertrain Control Module/PCM) calibration has been revised. Use the following Repair Procedure to address this condition.
T-SB-0011-14 Rev2017-08-14. Service bulletin. TSB: Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL "ON" condition with either one or both of the following Diagnostic Trouble Codes (DTCs): ? P2646 ? A Rocker Arm Actuator System Performance or Stuck Off (Bank 1) ? P265B ? B Rocker Arm Actuator Position Sensor Circuit Range Performance (Bank 1) The Engine Control Module (ECM, SAE term: Powertrain Control Module/PCM) calibration has been revised. Use the following Repair Procedure to address this condition.
T-SB-0011-14 Rev2017-08-14. Service bulletin. TSB: Some 2014 model year Corolla vehicles equipped with the 2ZR-FAE engine may exhibit a MIL "ON" condition with either one or both of the following Diagnostic Trouble Codes (DTCs): * P2646 - A Rocker Arm Actuator System Performance or Stuck Off (Bank 1) * P265B - B Rocker Arm Actuator Position Sensor Circuit Range Performance (Bank 1) The Engine Control Module (ECM, SAE term: Powertrain Control Module/PCM) calibration has been revised. Use the following Repair Procedure to address this condition.

4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.