Faulty spark plug voltage detection module (also called ignition coil module) on the rear bank; Damaged or corroded wiring in the reset circuit between the module and the ECM; Loose or poor electrical connection at the module or ECM connector; Failed ignition coil or spark plug causing abnormal voltage feedback; ECM internal fault affecting the reset circuit driver; Aftermarket or incorrect spark plugs interfering with voltage detection; Moisture intrusion or heat damage to the module or its connector

DTC codes / Nissan codes / P1319

P1319 · NissanSpark Plug Voltage Detection Module Reset Circuit Malfunction Rear Bank

P1319 on Nissan vehicles indicates that the engine control module (ECM) has detected a malfunction in the reset circuit of the spark plug voltage detection module for the rear bank of cylinders. The ECM monitors this circuit to ensure the ignition system's voltage feedback is properly reset between combustion events, and it sets this code when the reset signal is missing, erratic, or out of expected range.

SystemPowertrain

Code typeNissan specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Illumination of the check engine light (malfunction indicator lamp) on the dashboard
Often no noticeable drivability symptoms besides the warning light
Occasional engine misfire or rough running under load, especially if the fault affects ignition timing
Slightly reduced fuel economy in some cases
Intermittent hesitation during acceleration
Failed emissions test due to the stored trouble code

Common causes, most likely first

Faulty spark plug voltage detection module (also called ignition coil module) on the rear bank
Damaged or corroded wiring in the reset circuit between the module and the ECM
Loose or poor electrical connection at the module or ECM connector
Failed ignition coil or spark plug causing abnormal voltage feedback
ECM internal fault affecting the reset circuit driver
Aftermarket or incorrect spark plugs interfering with voltage detection
Moisture intrusion or heat damage to the module or its connector

How to diagnose and fix it

Use an OBD-II scanner to verify P1319 is the only stored code and check for pending or related codes
Inspect the spark plug voltage detection module connector and wiring for corrosion, looseness, or damage
Test the reset circuit wiring for continuity and short to ground or power using a digital multimeter
Swap the rear bank ignition coil or module with a known-good unit to see if the code follows
Check spark plugs for correct type, gap, and condition; replace if worn or incorrect
If wiring and components test good, perform a resistance and voltage drop test on the reset circuit
Repair or replace faulty wiring, connectors, or the detection module as needed, then clear codes and verify

Hidden Causes of P1319 Reset Circuit Faults

A weak or failing battery or charging system can cause voltage fluctuations that mimic a reset circuit fault, so always check battery health first.
The code often appears after spark plug replacement if the wrong plug type or gap is used, altering the voltage signature seen by the detection module.
Corrosion inside the module connector is a common culprit even when the outside looks clean, so unplug and inspect the pins carefully.
A misfire code may not be present because the reset circuit fault can occur without affecting combustion enough to trigger a misfire monitor.
The ECM may set P1319 intermittently due to heat-related expansion of a poor connection, so wiggle-test wiring while the engine is running.

Can I keep driving with P1319?

You can generally continue driving with P1319 if the engine runs smoothly, but avoid heavy acceleration or towing until the fault is repaired. If you notice misfiring, hesitation, or flashing check engine light, 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.