Code result
P25F1
Vacuum Pump Control Circuit B High
Moderate severity
What it means
Voltage on the secondary vacuum pump control line is above the expected window. Typical causes are a short to battery or an open motor that lets the driver float high.
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 a B+ supply
highOne of the most commonly reported causes for this code — check this first.
Open motor winding or worn brushes
mediumA plausible cause — test and verify before replacing parts.
Related help
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