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P0121 Diagnostic Trouble Code Discussion for March 2010

Throttle Position Sensor Does Not Agree With MAP


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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2005 Mercury Mountaineer 4.0L No Start, Poor Idle Quality, MIL Lamp on VIN: 4M2ZU86K15
P0121: tp a. This vehicle was towed in for no start. It is drive by wire. Customer stated he stopped at his son's house for about a half hour. Came out & truck was a crank no start. Cycled key a few times & truck started but displayed "fail Safe". Customer ...
March 29, 2010
2005 Mercury Mountaineer 4.0L No Start, Poor Idle Quality, MIL Lamp on VIN: 4M2ZU86K15
P0121: tp a. This vehicle was towed in for no start. It is drive by wire. Customer stated he stopped at his son's house for about a half hour. Came out & truck was a crank no start. Cycled key a few times & truck started but displayed "fail Safe". Customer ...
March 29, 2010