Code result
P081D
Neutral Input Circuit
Moderate severity
What it means
General electrical fault on the Neutral input circuit — used by ECM/PCM to detect Neutral and adjust idle speed and start enable.
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
Open or shorted neutral input wire
highOne of the most commonly reported causes for this code — check this first.
Related help
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