LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2021 >> QX80 Sensory, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 5) >> Engine (ECM) >> DTC P0223: TP Sensor >> DTC Description >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

NOTE: If DTC P0222 or P0223 is displayed with DTC P0643, perform the trouble diagnosis for DTC P0643. Refer to DTC Description .

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0222

TP SEN 1/CIRC-B1

(Throttle position sensor 1 circuit low input)

An excessively low voltage from the TP sensor 1 is sent to ECM.

  • Harness or connectors

    (TP sensor 1 circuit is open or shorted.)

  • Electric throttle control actuator

    (TP sensor 1)

P0223

TP SEN 1/CIRC-B1

(Throttle position sensor 1 circuit high input)

An excessively high voltage from the TP sensor 1 is sent to ECM.