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P1121 Diagnostic Trouble Code Discussion for January 2005

Electronic Throttle Control Actuator Malfunction

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Trouble Ticket Help Requests for DTC P1121
Help Request Posted
1999 Ford Contour SE 2.5L MIL Lamp on, humming VIN: 1FAFP66L8X
P1121: TP Sensor inconsistant with MAP sensor. When reving the engine it begins to hum like a pump running very loudly. It sounds like a loud commercial grade driveway vacuum cleaner. We have determined that the noise is coming from within the air cleaner. Removed the air cleaner cover and the noise is com...
January 18, 2005
1999 Mercury Mystique GS 2.5L Stall, MIL Lamp on
P1121: TPS inconsistent with MAF sensor. ... the air filter box will vibrate and cause a loud howl noise. Also, at the same time the engine will stall and will restart fine. Will set code P1121, TPS inconsistent with MAF, I assume that the severe vibration in the air filter box is causing the MAF sig...
January 28, 2005