Code result
P2307
Ignition Coil C Primary Control Circuit High
Moderate severity
What it means
The primary control voltage at ignition coil C exceeds the upper limit, suggesting a short to battery or an open primary winding.
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
Primary shorted to battery
highOne of the most commonly reported causes for this code — check this first.
Open primary winding
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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