DTC 43: Throttle Position (TP) Sensor

WARNING: This page is about a different variant/trim than selected.

Check Power Supply - Turn ignition off. Disconnect TP sensor harness connector. See Fig 1 . Turn ignition on. Measure voltage between TP sensor connector terminal "a" and ground. See Fig 2 . If voltage is about 5 volts, go to next step. If voltage is not as specified, repair harness or connectors as necessary.
Check Ground Circuit - Turn ignition off. Check continuity between TP sensor connector terminal "c" and engine ground. See Fig 3 . If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary.
Check Input Signal Circuit - Disconnect ECM harness connector. Check for continuity between ECM connector terminal No. 20 and TP sensor connector terminal "b". See Figure and Fig 4 . If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary.
Check Component - Inspect TP sensor. See SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE section. Replace TP sensor if necessary and perform FINAL CHECK in this article. If TP sensor is okay, repair ECM pin terminals or harness connector.

Fig 1: Locating TP Sensor Harness Connector (Sentra)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: DTC 43, Checking Power Supply (Sentra)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: DTC 43, Checking Ground Circuit (Sentra)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: DTC 43, Checking Input Signal Circuit (Sentra)

Courtesy of NISSAN MOTOR CO., U.S.A.