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Home >> Jeep >> 2019 >> Grand Cherokee Laredo, AWD, Automatic T/Case Control >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P00FD To P0206 >> DTC Troubleshooting >> P0123-Throttle Position Sensor 1 Circuit High >> Possible Causes

Possible Causes

Possible Causes
5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
TPS SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE
TPS SIGNAL 1 CIRCUIT SHORTED TO THE 5-VOLT SUPPLY CIRCUIT
TPS SIGNAL 1 CIRCUIT SHORTED TO THE ETC MOTOR (+) CIRCUIT
TPS SIGNAL 1 CIRCUIT SHORTED TO THE ETC MOTOR (-) CIRCUIT
TPS SIGNAL 1 CIRCUIT OPEN/HIGH RESISTANCE
TPS SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
THROTTLE BODY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .