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P1121 Diagnostic Trouble Code Discussion for January 2015

Electronic Throttle Control Actuator Malfunction

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Trouble Ticket Help Requests for DTC P1121
Help Request Posted
2002 Ford Explorer XLS 4.0L High RPM on highway VIN: 1FMZU72E92
P1121: TPS inconsistant with MAF. ... freeway speeds like it will not go into 4th gear. This is the third time in the shop for the same problem and we can not duplicate it. Only code we have is P1121 that I do not think I have ever seen on any vehicle. MAF and TPS both look good. Any ideas? Th...
January 05, 2015