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P2528 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.
Diesel vehicles have a separate vacuum pump an reservoir because they cannot utilize vacuum from the engine the way a gasoline vehicles can. There is a separate sensor on this reservoir to tell the engine control module (PCM) when to turn the vacuum pump on an off. If the PCM detects an incorrect signal from this sensor, it will set code P2528.
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OBD-II Code Climate control systems will not work is defined as a Vacuum Reservoir Pressure Sensor Circuit High
Diesel vehicles have a separate vacuum pump an reservoir because they cannot utilize vacuum from the engine the way a gasoline vehicles can. There is a separate sensor on this reservoir to tell the engine control module (PCM) when to turn the vacuum pump on an off. If the PCM detects an incorrect signal from this sensor, it will set code P2528.