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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P0107 To P0123 >> 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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