Code result
P2800
Transmission Range Sensor B Circuit
High severity
What it means
The TCM detects an invalid PRNDL signal pattern from transmission range sensor B. The selected gear position cannot be determined reliably from the B-channel.
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
Range switch contact array failed
highOne of the most commonly reported causes for this code — check this first.
Open or short in PRNDL wiring
mediumA plausible cause — test and verify before replacing parts.
Related help
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