Code Definition

P2310 — Ignition Coil “D” Primary Control Circuit High

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

About P2310

P2310 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 P2310 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 P2310 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 P2310 indicates a primary control circuit high condition for ignition coil D. The control module fires coil D by switching its primary control wire to ground, and sets this code when it detects a higher than expected voltage on that circuit while the coil is commanded on, showing the circuit is not pulling low. The fault usually stems from an open or high resistance in the control wire or power feed, an open primary winding in the coil, or a module driver fault. Expect a misfire on the cylinder served by coil D, with rough running, hesitation, reduced power, and a check engine light that m...

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