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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (2.9L Pcm 2 - DTCS P068A-00 To P2235-00) >> DTC Troubleshooting >> P2123-00-Accelerator Pedal Position Sensor 1 Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
TPS 4 SIGNAL CIRCUIT SHORTED TO VOLTAGE
TPS 4 SIGNAL CIRCUIT SHORTED TO THE 5-VOLT SUPPLY CIRCUIT
TPS 4 SIGNAL CIRCUIT SHORTED TO THE ETC MOTOR (+) CIRCUIT
TPS 4 SIGNAL CIRCUIT SHORTED TO THE ETC MOTOR (-) CIRCUIT
TPS 4 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
TPS RETURN CIRCUIT OPEN/HIGH RESISTANCE
THROTTLE BODY 2
POWERTRAIN CONTROL MODULE 2 (PCM-2)

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