Code result
P279D
Four Wheel Drive (4WD) Range Signal Circuit
High severity
What it means
The 4WD range signal circuit (reporting whether 2H, 4H, 4L is engaged) returns no usable signal.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Open range sensor or broken signal wire
highOne of the most commonly reported causes for this code — check this first.
Corroded sensor connector
mediumA plausible cause — test and verify before replacing parts.
Related help
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