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Protege ES, Standard
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DTC P0121: Throttle Position Sensor Circuit - Range/Performance Problem
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Possible Causes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Causes
MAF sensor malfunction.
PCM malfunction.
Poor connection in Throttle Position (TP) sensor signal circuit.
TP sensor malfunction.
Voltage drops in reference voltage supply or ground circuits.