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P0221 Diagnostic Trouble Code Discussion for November 2017

Throttle Position Sensor 2 Circuit Performance

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Trouble Ticket Help Requests for DTC P0221
Help Request Posted
1999 Ford F-350 Super Duty Lariat 7.3L Cuts out, lack of power VIN: 1FTSW31F3X
P0221: Idle Validation/Throttle Switch 'B' Performance. I am NOT a diesel guy, But he is a regular/good customer, so I said I'd try.It will stall while scanner communicates, sometimes. Has a lack of power and loud hissing on accel, no leaks can find. Watching turbo during self test, I don't see the lever on top mov...
November 09, 2017