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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 347 (Gas - DTCS P0118 To P0160) >> P0121-Throttle Position Sensor 1 Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
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)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .