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Home >> Chrysler >> 2006 >> 300 Base, 42RLE/VLP >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - DTCS P0016 To P0121, Diagnostic Code Index, Pre Diagnostic Troubleshooting Procedure & Intermittent Condition >> Electrical Diagnostics >> Diagnosis And Testing >> P0121-Throttle Position Sensor 1 Performance >> Possible Causes

Possible Causes

Possible Causes 
RESISTANCE IN THE (K22) TP SENSOR NO.1 OR (K122) TP SENSOR NO.2 SIGNAL CIRCUIT
RESISTANCE IN (F855) 5-VOLT SUPPLY CIRCUIT
RESISTANCE IN THE (K922) SENSOR RETURN CIRCUIT
(K22) TP SENSOR NO.1 SIGNAL CIRCUIT SHORTED TO (K122) TP SENSOR NO.2 SIGNAL CIRCUIT
THROTTLE POSITION SENSOR/THROTTLE BODY
PCM

Always perform the  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE   before proceeding.