OBD Vacuum Pump Control Circuit B/Open
What it means
P25EE stands for Vacuum Pump Control Circuit B/Open. P25EE is a P code, so the fault sits in the engine, transmission and emissions systems. For P25EE, the second digit places it in speed and idle control. For P25EE, work through the cause list below, cheapest checks first.
Where it lives
For P25EE, the pump sits on the circuit this code reports. The description of P25EE reports a fault at the pump.
What to check first
For P25EE, pull the connector and inspect the terminals for spread, corrosion or backed-out pins before testing anything else.
Check these first
- P25EE: Faulty sensor or actuator in the control circuit
- P25EE: Wiring, connector, or fuse problem for the affected output
- P25EE: Low or unstable system voltage from the battery or charging system
- P25EE: Failed PCM/ECM or a software error
- P25EE: Poor ground connection for the control module
What to do next
P25EE belongs to the speed and idle control system. These are the general steps for P25EE, and the exact cause on your vehicle can differ.
- P25EE: Verify battery voltage and charging system health first
- P25EE: Read all related module codes with an OBD-II scanner
- P25EE: Inspect wiring, connectors, and grounds for the affected circuit
- P25EE: Test the sensor or actuator with live data and actuation commands
- P25EE: Check for PCM software updates or TSBs before replacing modules
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.