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Diagnostic Trouble Code: P0121
Diagnostic Trouble Code Name: Throttle Position Sensor (TP) circuit range or performance problem
Vehicle Make: Ford
Vehicle Model: Falcon (AU)
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:
Fuel Trim System Lean at Idle Bank 1
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P2177, P2179, P2187, or P2189
Circuit / System Description
The fuel trim control system monitors the range of the air/fuel ratio in order to maintain the desired ratio for optimum emissions performance. The system performs tests during certain operating conditions to detect unmetered air or unmetered fuel. The fuel trim control system operation can be observed by monitoring the scan tool Short Term and Long Term Fuel Trim parameters.
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