Code result
P2551
Torque Management Request Input Signal B High
Moderate severity
What it means
Torque management input B reads stuck high — short to reference voltage or message at maximum. ECM rejects the request to avoid unintended high-torque commands.
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
Signal wire shorted to reference voltage
highOne of the most commonly reported causes for this code — check this first.
Related help
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