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Home >> Toyota >> 2005 >> Sienna CE >> Repair and Diagnosis >> Engine Performance >> Engine Control System (SFI) - Diagnostics >> DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem >> Inspection Procedure
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Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester or the OBD II scan tool, as freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.

  1. REPLACE  THROTTLE BODY ASSY