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P026A - Charge Air Cooler Efficiency Below Threshold

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DTC DESCRIPTION P026A - CHARGE AIR COOLER EFFICIENCY BELOW THRESHOLD

Description:  This DTC sets when the PCM detects that the modeled charge air cooler efficiency differs from the measured charge air cooler efficiency by greater than a calibrated value for 10 seconds.
Possible Causes: 
  • Low charge air cooler (CAC) coolant level
  • Restricted CAC
  • Restricted CAC coolant inlet hose
  • Restricted CAC coolant outlet hose
Diagnostic Aids:  Check the CAC system for low fluid level, cracked, restricted or misrouted coolant lines, cracked or restricted heat exchanger.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST FB .
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