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Home >> Nissan-Datsun >> 2019 >> Sentra SR >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (1.8L) (1 Of 4) >> DTC / Circuit Diagnosis >> DTC P0123: TP Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC Index .

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0122

TP SEN 2/CIRC-B1

(Throttle/Pedal position sensor/switch "A" circuit low)

An excessively low voltage from the TP sensor 2 is sent to ECM.

  • Harness or connectors

    (TP sensor 2 circuit is open or shorted.)

  • Electric throttle control actuator

    (TP sensor 2)

P0123

TP SEN 2/CIRC-B1

(Throttle/Pedal position sensor/switch "A" circuit high)

An excessively high voltage from the TP sensor 2 is sent to ECM.