The good news is most likely just one is bad. The bad news it that you should be replace both of them. Check on manufacturers warranty.
There is a recall of chaffing wires in the steering column.
There is a TSB that might effect your changing.
SYMPTOM/CONDITION:
A small number of customers may experience a Malfunction Indicator Lamp (MIL)
illumination. Upon further investigation a technician may find one of more of the following
Diagnostic Trouble Codes (DTCs) set in the PCM memory.
• **P205E - (Diesel Exhaust Fluid) Reductant Tank Temperature Sensor Circuit
Intermittent (setting when the block heater is plugged in).
• U110E - Lost Ambient Temperature Message.
• P20E8 - (Diesel Exhaust Fluid) Reductant Pressure Too Low.**
• P2281 - Air Leak Between MAF And Throttle Body.
• P1477 - Intake Air Diverter Valve Position Sensor Circuit Shorted To Ground.
• U1421 - Implausible Ignition Key Off Time Received.
• P026B - Injection Timing Performance.
NUMBER: 18-041-15 REV. A
GROUP: Vehicle Performance
DATE: November 07, 2015
In addition to addressing the above DTCs, the following powertrain system
improvements/enhancements are also included in this software release.
• **SCR Efficiency scan tool test improvement.**
• 68RFE Transmission Shift Quality Improvements for low speed First to Neutral and
Neutral to First (Garage Shifts).
• Charging system improvements for single alternator applications (Changes the
cutout threshold from 600 to 500 RPM).
• Diesel Exhaust Fluid (DEF) system calibration improvement during Stationary
Regeneration.
• Cold idle speed stability improvement.
• Charging system improvements for dual alternator applications.
• Torque increase to 865 ft/lbs (D2 vehicles equipped with the Aisin transmission
sales code DF2 only).
• Fuel Filter Minder calibration changes.
• wiTECH Fuel Pressure Override and Fuel System Run Up test improvements.