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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (6.7L Diesel - DTCS P0402 To P1CEF - 2500 & 3500) >> Diagnosis and Testing >> P0546-Exhaust Gas Temperature Sensor Circuit High - Bank 1 Sensor 1 >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(K185) EXHAUST GAS TEMPERATURE SENSOR 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K185) EXHAUST GAS TEMPERATURE SENSOR 1 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
(K900) SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
EXHAUST GAS TEMPERATURE SENSOR 1
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  .