P026A
Charge Air Cooler Efficiency Below Threshold
Charge air cooler efficiency dropped below diagnostic threshold — intake air not cooled enough after compression. Risk of knock and loss of power.
Charge air cooler efficiency dropped below diagnostic threshold — intake air not cooled enough after compression. Risk of knock and loss of power.
Common causes
- high
Intercooler airflow blocked or core damaged
One of the most commonly reported causes for this code — check this first.
Typical part cost: $110-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P026A mean?
P026A means "Charge Air Cooler Efficiency Below Threshold". It is a generic OBD-II code that points to a fault in the fuel & air metering (injector circuit).
What are the most common causes of P026A?
intercooler airflow blocked or core damaged — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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