LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 436 (6.7L Diesel - DTCS P2299 To U3017 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> U029E-Lost Communication With NOX Sensor "B" >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
LOW BATTERY VOLTAGE
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN/HIGH RESISTANCE
FUSED IGNITION SWITCH OUTPUT CIRCUIT SHORTED TO GROUND
FUSED IGNITION SWITCH OUTPUT CIRCUIT SHORTED TO THE GROUND CIRCUIT
GROUND CIRCUIT OPEN/HIGH RESISTANCE
J1939 DATALINK (+) CIRCUIT OPEN/HIGH RESISTANCE
J1939 DATALINK (-) CIRCUIT OPEN/HIGH RESISTANCE
J1939 DATALINK (+) CIRCUIT SHORTED TO BATTERY OR GROUND
J1939 DATALINK (-) CIRCUIT SHORTED TO BATTERY OR GROUND
J1939 DATALINK (+) CIRCUIT SHORTED TO ANOTHER CIRCUIT
J1939 DATALINK (-) CIRCUIT SHORTED TO ANOTHER CIRCUIT
J1939 DATALINK COMPONENT INTERNALLY SHORTED
FAULTY NOx SENSOR 1/2
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  .