Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Throttle Valve Rest Position Not Reached During Learning
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P1551
Circuit / System Description
The engine control module (ECM) controls the throttle valve by applying a varying voltage to the control circuits of the throttle actuator control (TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the throttle position (TP) sensors?1 and 2 to determine the actual throttle valve position.
