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Diagnostic Trouble Code: 022
Diagnostic Trouble Code Name: Front Washer Request Signal Circuit
Vehicle Make: Holden
Vehicle Model: Epica (V250)
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 (TP) circuit range or performance problem.
DTC P0121 is reported if the TP sensor signal is out of the self-test range.
Possible Mechanical Faults
Binding or bent throttle linkage or cable, throttle plate below closed position, throttle plate or base idle screw maladjustment, TP sensor not properly secured; loose NOTE: idle speed is controlled by the IAC. The throttle stop screw must not be adjusted.
Possible Sensor Faults
TP sensor damaged or faulty; corrosion on TP sensor brush, contaminated TP sensor brush
Possible Wiring Faults
Improper connection, incorrect Reference Voltage (VREF), open or grounded TP sensor or Signal Return (SIGRTN) circuit
Possible Module Faults
Throttle was open during KOEO test procedure, faulty or damaged PCM
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