LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 1999 >> Forester Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - Forester, IMPREZA 2.2L & 2.5L & Legacy 2.2L >> Diagnostic Tests >> DTC P1142: Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)

DTC P1142: Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)

  1. Turn ignition off. Connect scan tool and read DTCs. If DTC P0122 or P0123 exists, diagnose affected DTC. Do not diagnose P1142. If DTC P1142 is only DTC set, on Impreza and Legacy 2.2L (California emissions) replace TP sensor. On all other vehicles, go to next step.
  2. Observe intake manifold absolute pressure signal. Start engine. If value is less than zero in. Hg, replace intake manifold absolute pressure sensor. If value is more than zero in. Hg, replace TP sensor.
scientia non olet · About LEMON Manuals