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P0121 Diagnostic Trouble Code Discussion for November 2007

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
1999 Dodge Ram 2500 5.9L Cuts out, MIL Lamp on VIN: 3B7KF236XX
P0121: APPS voltage does not agree with valid idle signal. ... might interest you. Not a big diesel fan, but specialize in Chrysler, and this for a good customer and friend. He says that intermittently at cruising speed, with light steady throttle the engine will go to idle. When this happens there is no response at ...
November 13, 2007