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Symptom: P0122-THROTTLE POSITION SENSOR VOLTAGE LOW When Monitored and Set Condition: P0122-THROTTLE POSITION SENSOR VOLTAGE LOW When Monitored: With the ignition on and battery voltage above 10.4 volts. Set Condition: The throttle position sensor signal voltage is below 0.1 volt. POSSIBLE CAUSES INTERMITTENT CONDITION 5-VOLT SUPPLY CIRCUIT OPEN TP SENSOR IDLE VOLTAGE VERIFY TP SENSOR OPERATION 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND TP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND 5-VOLT SUPPLY CIRCUIT SHORTED TO THE SENSOR GROUND CIRCUIT TP SENSOR SIGNAL CIRCUIT SHORTED TO THE SENSOR GROUND CIRCUIT PCM - 5-VOLT SUPPLY CIRCUIT PCM - TP SENSOR SIGNAL CIRCUIT TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → No → 2 Turn the ignition off. All Yes → No → 48 DRIVEABILITY - DIESEL |