P2527 OBD-II: Vacuum Reservoir Pressure Sensor Circuit Low
P2527 Severity
Will P2527 go away on its own?
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.
What causes OBD-II fault code P2527?
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 P2527.
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