Code result
P258D
Vacuum Pump Control Circuit A High
Moderate severity
What it means
The vacuum pump control circuit reads stuck high — short to battery voltage or open coil/return. The driver cannot pull the line low to start the pump.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Control wire shorted to battery voltage
highOne of the most commonly reported causes for this code — check this first.
Open pump motor winding
mediumA plausible cause — test and verify before replacing parts.
Related help
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