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Home >> Jeep >> 2023 >> Compass Altitude >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P0117 To P018C >> DTC Troubleshooting >> P0121-Throttle Position Sensor 1 Performance >> Possible Causes
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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  .