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Diagnostic Trouble Code: B1255
Diagnostic Trouble Code Name: Air temperature external sensor circuit open
Vehicle Make: Ford
Vehicle Model: Falcon (FG)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Throttle Position Sensor 2 Performance
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0121-P0123 or P0221-P0223
Circuit / System Description
The throttle body assembly contains 2?throttle position sensors. The TP sensors are mounted to the throttle body assembly and are not serviceable. The TP sensors provide a signal voltage that changes relative to throttle blade angle. The Engine Control Module (ECM) supplies the TP sensors with a common 5?V reference circuit , a common low reference circuit, and two independent signal circuits. The TP sensors have opposite functionality. TP sensor?1 signal voltage decreases from greater than 4?V at idle to less than 1?V at wide open throttle (WOT). TP sensor?2 signal voltage increases from less than 1?V at idle to greater than 4?V at WOT.
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