Faulty ignition coil or spark plug on the front bank causing abnormal voltage feedback; Damaged or corroded wiring in the spark plug voltage detection circuit; Loose or poor connection at the ignition coil harness connector; Failed spark plug voltage detection sensor or module (where equipped); Engine control module (ECM) internal fault affecting the detection circuit; Excessive ignition system interference from worn spark plugs or incorrect gap

DTC codes / Nissan codes / P1316

P1316 · NissanSpark Plug Voltage Detection Circuit Malfunction Front Bank

Q: What does code P1316 mean?

Spark Plug Voltage Detection Circuit Malfunction Front Bank. P1316 on Nissan vehicles means the engine control module (ECM) has detected an abnormal signal from the spark plug voltage detection circuit on the front bank of cylinders. The ECM uses this circuit to monitor ignition performance and misfire events, and it sets the code when the voltage feedback falls outside the expected range during engine operation.

P1316 on Nissan vehicles means the engine control module (ECM) has detected an abnormal signal from the spark plug voltage detection circuit on the front bank of cylinders. The ECM uses this circuit to monitor ignition performance and misfire events, and it sets the code when the voltage feedback falls outside the expected range during engine operation.

SystemPowertrain

Code typeNissan specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Rough idle or engine misfire, especially when cold or under light load
Hesitation or stumble during acceleration
Reduced fuel economy compared to normal driving
In rare cases, a flashing check engine light if the misfire becomes severe

Common causes, most likely first

Faulty ignition coil or spark plug on the front bank causing abnormal voltage feedback
Damaged or corroded wiring in the spark plug voltage detection circuit
Loose or poor connection at the ignition coil harness connector
Failed spark plug voltage detection sensor or module (where equipped)
Engine control module (ECM) internal fault affecting the detection circuit
Excessive ignition system interference from worn spark plugs or incorrect gap

How to diagnose and fix it

Inspect the front bank ignition coils and spark plugs for wear, damage, or incorrect gap
Check the harness connectors at each front bank ignition coil for corrosion or looseness
Measure resistance and continuity of the spark plug voltage detection circuit wiring
Swap ignition coils between front and rear banks to see if the code follows a specific coil
Test the spark plug voltage detection sensor or module if the vehicle is equipped with one
Verify ECM ground and power supply integrity before condemning the ECM
Replace the faulty component (coil, plug, wiring, or sensor) and clear the code to confirm repair

What Nissan Technicians Check First for P1316

A loose or corroded ignition coil connector on the front bank is a frequent cause that many DIYers overlook when replacing coils.
The code can be set by a marginal spark plug that still fires but produces an abnormal voltage waveform, so always inspect plugs before replacing expensive coils.
On some Nissan models, the spark plug voltage detection circuit is integrated into the ignition coil assembly, so a coil replacement may be the only fix.
A P1316 can sometimes be a false alarm caused by electrical interference from aftermarket ignition components or poor grounding.
Do not assume the ECM is faulty until all wiring and component tests have been completed, as ECM failure is rare.

Can I keep driving with P1316?

You can usually continue driving with P1316 if the engine runs smoothly, but avoid heavy acceleration or towing until the fault is repaired. If the check engine light flashes or the engine misfires noticeably, stop driving and seek service immediately to prevent catalytic converter damage.

Tools that help

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Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.