What Does P2527 Code Mean?

OBD-II Code P2527 is defined as a Vacuum Reservoir Pressure Sensor Circuit Low

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.

P2527 Symptoms

  • Climate control systems will not work

Common Problems That Trigger the P2527 Code

  • Powertrain Control Module (PCM) failure
  • Vacuum reservoir pressure sensor failure
  • Wiring issue
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