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2002
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XJ8 Base
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Engine Controls - Self-Diagnostics
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Diagnostic Trouble Code Identification
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DTC P0121: Throttle Position Sensor Circuit Range/Performance
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Possible Causes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Causes
TPS to ECM wiring open or high resistance.
TPS to ECM sensing circuits 1 or 2 shorted to voltage.
TPS failure.