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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 203 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0221: Throttle Position Sensor Circuit Range Performance Problem >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction is detected when rationally incorrect voltage is sent to ECM compared with the signals from TP sensor 1 and TP sensor 2. Possible causes are:

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