Diagnostic code P026A

[Rischer]

Have a 2010, 6.7, got this code which reads out "charge air cooler efficiency below threshold". What does this mean in english? What do I need to do? Thanks. 11/30/2017

 

[sag2]

P026A-CHARGE AIR COOLER EFFICIENCY BELOW THRESHOLD

For a complete wiring diagram, refer to the Wiring Information.

• When Monitored:
With the engine running, Charge Air Cooler (CAC) Temperature Sensor, Inlet Air Temperature, and Ambient Air Temperature Sensor status are valid.

• Set Condition:
The Powertrain Control Module (PCM) compares the CAC Temperature Sensor reading to a calibrated threshold. The calibrated threshold varies, and is dependant on the reading from the Ambient Air Temperature Sensor. If the CAC Temperature Sensor reading is above the calibrated threshold for a cumulative total of 120 seconds, the PCM determines that the Charge Air Cooler is inefficient. Two trip fault.







Possible Causes


CHARGE AIR COOLER TEMPERATURE SENSOR
CHARGE AIR COOLER FINS BLOCKED FROM DEBRIS
COOLING FAN FAULTY

 

[TRAMPLINEMAN]

I get this code a couple times a year. It happens randomly. I clear the code and forget about it. The dealer won’t do anything anyway.

 

[Rischer]

Thanks guys, I did pull the grill off (thanks to Genos kit) and found all the radiators clogged with rabbit brush seeds. A mess. I blew from the backside, the vacuumed from the front, then hosed off with water. Time will tell now!