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P00A4 Severity
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
The Charge Air Cooler Temperature Sensors tell the engine control module (PCM) the temperature of the air going into an out of the charge air cooler assembly. The Charge Air Cooler Assembly cools the air coming out of the turbocharger before the air goes into the engine. If the PCM detects an incorrect signal from the Charge Air Cooler Sensor, the PCM will set code P00A4.
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OBD-II Code Powertrain Control Module (PCM) failure is defined as a Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic
The Charge Air Cooler Temperature Sensors tell the engine control module (PCM) the temperature of the air going into an out of the charge air cooler assembly. The Charge Air Cooler Assembly cools the air coming out of the turbocharger before the air goes into the engine. If the PCM detects an incorrect signal from the Charge Air Cooler Sensor, the PCM will set code P00A4.