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Home >> Dodge and Ram >> 2008 >> Magnum Base >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0016 To P0122 >> P0121-Throttle Position Sensor 1 Performance >> Possible Causes
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Possible Causes

Possible Causes 
INTERMITTENT DTC
(F855) 5 VOLT SUPPLY CIRCUIT HIGH RESISTANCE
(K22) TP SIGNAL 1 CIRCUIT HIGH RESISTANCE
(K122) TP SIGNAL 2 CIRCUIT HIGH RESISTANCE
(K922) TP SENSOR GROUND CIRCUIT HIGH RESISTANCE
(K22) TP SIGNAL 1 CIRCUIT SHORTED TO THE (K122) TP SIGNAL 2 CIRCUIT
THROTTLE BODY
POWERTRAIN CONTROL MODULE (PCM)

Perform *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .