Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the fan that helps cool down the air going into the engine isn't working properly because there's a problem with its electrical circuit.
The P028A code is triggered when the Engine Control Module (ECM) detects an open circuit or malfunction in the charge air cooler cooling fan control circuit.
The charge air cooler, also known as an intercooler, cools the air compressed by the turbocharger before it enters the engine. The cooling fan helps maintain optimal air temperature. An open circuit in the fan control can prevent the fan from operating, potentially leading to higher intake air temperatures and reduced engine performance.
• Check Engine Light illuminated
• Reduced engine performance
• Increased engine temperature
• Possible overheating
• Poor fuel economy
• Faulty charge air cooler cooling fan
• Open or shorted wiring in the fan control circuit
• Faulty ECM or PCM
• Blown fuse related to the fan circuit
• Corroded or damaged electrical connectors
ECM: Engine Control Module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the cooling fan and related wiring for damage.
• Check the fuse related to the fan circuit.
• Test the fan operation with a multimeter.
• Inspect and clean electrical connectors.
• Replace or repair the cooling fan.
• Repair or replace damaged wiring or connectors.
• Replace the fuse if blown.
• Replace the ECM or PCM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regularly inspect and maintain cooling system components.
• Ensure electrical connections are clean and secure.
• Check for software updates from the manufacturer.
Engine Performance Issue
• Avoid driving in extremely hot conditions until repaired.
• Monitor engine temperature closely.
• Schedule a repair with a qualified technician.
Check with your vehicle manufacturer as some components may be covered under warranty.
This code has become more common with the increased use of turbocharged engines, which rely on charge air coolers for efficiency.
Moderate – Address the issue soon to avoid potential engine damage.
Driving with a malfunctioning cooling fan can lead to engine overheating and potential safety hazards.
• Vehicle at operating temperature
• Engine running
The charge air cooler cooling fan is typically located near the front of the vehicle, close to the radiator or intercooler.
Q: Can I drive with a P028A code?
A: It's not recommended to drive for extended periods with this code as it can lead to engine overheating.
Q: How can I reset the Check Engine Light?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the light should stay off.
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