Code result
P25C1
Alternative Fuel Disable Signal Circuit
Moderate severity
What it means
The feedback signal that confirms the alt-fuel disable command was carried out is missing or out of range. The fuel system cannot verify that the gas circuit is shut.
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 feedback wire between relay and control module
highOne of the most commonly reported causes for this code — check this first.
Feedback contact in the disable relay corroded or stuck
mediumA plausible cause — test and verify before replacing parts.
Related help
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