Code result
P2621
Throttle Position Output Circuit Low
Moderate severity
What it means
The buffered throttle position output that the engine controller sends to the transmission and body modules is below the expected level. Usually a short to ground or a failed output stage.
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
Output wire shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Output buffer transistor failed
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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