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Home >> Fiat >> 2021 >> 500X Pop >> Repair and Diagnosis >> Engine Performance >> System >> 1.3L - DTCS P0121 To P02EE >> DTC Troubleshooting >> P0121-Throttle Position Sensor 1 Performance >> Possible Causes

Possible Causes

Possible Causes
TPS 1 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
THROTTLE BODY ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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