Code result
C0727
Trailer Connector Circuit Malfunction
Moderate severity
What it means
The chassis or trailer brake module has detected a fault in the trailer wiring connector — for example open lighting circuit or short to ground. Trailer brake and lighting functions may be unavailable.
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
Connector pins corroded or bent
highOne of the most commonly reported causes for this code — check this first.
Short or open in trailer wiring
mediumA plausible cause — test and verify before replacing parts.
Related help
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