Code Definition

P2307 — Ignition Coil “C” Primary Control Circuit High

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P2307

P2307 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2307 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2307 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

DTC P2307 indicates a circuit high condition in the primary control circuit of ignition coil C. The control module charges and fires the coil by switching its primary control wire to ground, and stores this code when it reads a higher than expected voltage on the coil C primary control circuit while commanding it on, meaning the circuit is not being pulled low. Likely causes are an open or high resistance in the control wire or power feed, an open coil primary winding, or a fault in the module driver. The driver will usually feel a misfire on the cylinder fed by coil C, with rough idle, reduce...

Join TaT to view the complete code information and diagnostic details.

Quick Facts