Code result
C0547
Vacuum Sensor Supply Voltage Circuit/Open
High severity
What it means
Open circuit on the vacuum sensor supply voltage line. Vacuum sensors are used in vacuum-assisted brake boosters to monitor manifold or booster vacuum.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Supply wiring open
highOne of the most commonly reported causes for this code — check this first.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Cracked solder joint inside the module or sensor
lowLess common, but worth ruling out after the more likely causes.
Related help
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