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What does this code mean and how to fix it? p1121, 1999 ford explorer

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Thanks for using FixYa. Code P1121 means Throttle Position Sensor Inconsistent with Mass Air Flow Sensor and to resolve this issue you’ll have to replace the Throttle Position Sensor (TPS) which can be easily replaced. This sensor (TPS) is located on the side of the throttle body and is usually black with electrical connector & two screws, before replacing check if it’s not stuck. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Posted on Aug 31, 2010


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