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Home >> Dodge and Ram >> 2011 >> Durango Express, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P000A To P0140 >> Diagnosis And Testing >> P0121-Throttle Position Sensor 1 Performance >> Possible Causes

Possible Causes

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

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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