Powertrain, generic · Fuel and air metering (injector circuit)
P026E Charge Air Cooler Coolant Pump A Performance
Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible
Some engines cool the charge air with a coolant-to-air cooler in its own low-temperature circuit with an electric pump. P026E means that pump is electrically sound but does not deliver as commanded – judged from feedback by the pump electronics or from the missing temperature drop. FCA documents it on the 2017 Alfa Romeo Giulia and 2018 Stelvio with the 2.0 turbo, together with P024A, and fixed it with a software update; thresholds are not published. Air in the circuit or low coolant lets the pump run dry; hot charge air then costs power.
Likely causes
Air in the low-temperature circuit or low coolant (pump runs dry)
Pump faulty internally (bearing, impeller, electronics)
Software or calibration
Weak supply or ground, corroded connector
Symptoms
- Check engine light on
- Loss of power in heat or under load
- Follow-up code P026A possible
- Level in the auxiliary coolant tank drops
Repair estimate
DifficultyMediumDIY possible
Parts and labour€30–600
Time0.5–2.5 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
charge air cooler coolant pumplow temperature coolant circuit
Related codes
References: law.cornell.edu, static.nhtsa.gov, static.nhtsa.gov, gsi.ext.gm.com.