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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 353 (Gas - DTCS P1521 To P2098) >> P2078-Intake Manifold Tuning Valve Position Sensor Circuit High >> 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 
(F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K234) MTV SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K234) MTV SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT
(K234) MTV SIGNAL CIRCUIT SHORTED TO GROUND
(K234) MTV SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(K900) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
MANIFOLD TUNE VALVE ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

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