Code result
P25C0
Alternative Fuel Disable Control Circuit Low
Moderate severity
What it means
Voltage on the alternative-fuel disable control line is below the expected window. Usually a short to ground or a failed driver pulling the line low.
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
Disable control wire shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Low-side driver internally shorted
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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