P2316

Code

Generic P — Powertrain

Ignition Coil F Primary Control Circuit High

Brand: Generic

Type: P — Powertrain

Views: UK: 25 EN: 43 RU: 25

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Page language: EN

Causes

Open or shorted wiring in the coil F primary/control circuit
Short to battery voltage on the coil control wire
Poor connector, terminals corroded or pin pushed out at coil or ECM harness
Failed ignition coil F (internal short or internal driver fault)
Faulty ECM/PCM ignition driver transistor for coil F
Incorrect installation or aftermarket parts with wrong specifications

Symptoms

Check Engine MIL on (DTC P2316 stored)
Misfire on the cylinder served by coil F or rough idle
Reduced engine performance, hesitation or stumbling under load
Hard starting or no-start condition (if coil fails completely)
Occasional or permanent misfire-related vibrations

What to check

Retrieve freeze-frame and live data with a scan tool; note coil command status and misfire counters
Visually inspect wiring and connectors at coil F and ECM for damage, corrosion, loose pins or melted insulation
Check for related misfire codes (P030x) and whether the code moves after swapping coils
Measure coil primary resistance and compare to manufacturer spec
Backprobe the coil control connector and measure voltage while cranking and running
Perform a continuity/short-to-power and short-to-ground test between the coil control pin and ECM pin

Signal parameters

Expected coil control (ON/dwell): voltage pulled near ground, typically
Expected coil control (OFF): near battery voltage, typically ~11–14 V.
Typical primary coil resistance (general range): 0.2–3.0 ohms (varies by coil design)—compare to OE spec.
Secondary resistance generally thousands of ohms—use manufacturer spec for confirmation.

Diagnostic algorithm

Record freeze frame and note when the fault occurred (engine load, RPM, temperature).
Visually inspect coil F, harness, and connectors for damage, corrosion, or signs of overheating; repair any obvious wiring damage.
Using a scan tool, monitor coil command and coil-on status; while engine cranks or runs, backprobe the coil control terminal and observe voltage: when commanded ON it should be low (
If voltage stays high when commanded ON, check for short to battery: with ignition OFF, measure for continuity between coil control wire and battery positive (should be open).
Swap coil F with a known-good coil from another cylinder and clear codes. If the code follows the coil, replace the coil. If the code remains on coil F position, suspect wiring or ECM.
Check continuity between the coil control pin and the ECM driver pin. Repair any opens or high resistance. Also check for short-to-battery on that circuit.
If wiring and coil test OK, perform an oscilloscope test on the coil primary to observe driver waveform; abnormal or no switching indicates ECM driver fault — consider ECM testing/replacement per vehicle procedures.
After repairs, clear codes and perform a road/test run to confirm no recurrence and that misfire counts are resolved.

Likely causes

Damaged insulation or chafed wire contacting battery voltage
Loose or corroded connector at the coil or ECM
Failed coil with internal shorted primary winding
Wiring shorted to constant 12 V (fused feed)
ECM driver stuck open/failed

Fault status

⚠️ Status

ECM detected high voltage on Ignition Coil F primary control circuit. Check coil, harness/connector and driver circuitry for shorts to battery, opens, or failed components.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours