Code result
P27B6
Internal Control Module Transmission Speed Sensor Performance
High severity
What it means
The internal speed sensor processing logic in the transmission control module produces implausible results.
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
Internal software logic fault
highOne of the most commonly reported causes for this code — check this first.
Aged input capture circuitry drifts
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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