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Diagnostic Trouble Code: P0171
Diagnostic Trouble Code Name: Fuel System too lean (I6, bank 1- V8)
Vehicle Make: Ford
Vehicle Model: Falcon (BA)
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:
Exhaust Camshaft Position Sensor Performance
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0340, P0341, P0365, or P0366
Circuit / System Description
The camshaft position sensor - intake and camshaft position sensor - exhaust circuits consist of a 5?V reference circuit, a low reference circuit and the signal circuit. The engine control module (ECM) supplies the 5?V reference circuit and low reference, and uses the signal as an input. The camshaft position sensor - intake and camshaft position sensor - exhaust sensor is an internal magnetically biased sensing device. A tooth reluctor wheel is attached to the camshaft. When a reluctor wheel tooth passes the camshaft position sensor - intake and camshaft position sensor - exhaust sensor, the resulting change in the magnetic field is used by the camshaft position sensor - intake and camshaft position sensor - exhaust sensor electronics to produce a digital output pulse. The camshaft position sensor - intake and camshaft position sensor - exhaust sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with varying output pulse widths per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the camshaft position sensor - intake and camshaft position sensor - exhaust sensor output depends on the velocity of the camshaft. The engine control module decodes the narrow and wide tooth pattern to identify the camshaft position. This information is used to determine the optimal ignition and injection timing. The engine control module also uses the camshaft position sensor signal to determine the camshaft relative position to the crankshaft to control camshaft phasing and for limp home operation.
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