If your Nissan Altima’s check engine light is on and a scan tool shows OBD-II P1364, you’re likely dealing with an issue tied to the ignition timing control system specifically, a problem with the ignition timing control circuit. This code isn’t about misfires or fuel delivery. It points directly to how the engine control module (ECM) manages spark timing via the ignition timing control solenoid or its related wiring and sensors. Knowing what P1364 means helps you avoid unnecessary part replacements and get straight to the likely cause.

What does P1364 mean for a Nissan Altima?

P1364 is a manufacturer-specific OBD-II trouble code defined by Nissan as “Ignition Timing Control Circuit Malfunction.” It triggers when the ECM detects an open or short in the circuit that controls ignition timing usually involving the ignition timing control solenoid (sometimes called the “timing advance solenoid”) or its signal path. This solenoid adjusts spark timing based on engine load, RPM, and coolant temperature. When it fails or loses communication, the ECM sets P1364 and may default to fixed timing, which can cause rough idle, hesitation, or reduced power.

When do Altima owners typically see this code?

You’ll most often see P1364 after symptoms like:

  • A rough or unstable idle, especially when the engine is warm
  • Noticeable hesitation during acceleration
  • Reduced engine performance without obvious misfire codes (like P0300–P0304)
  • The check engine light coming on without other drivability issues at first

It’s more common in 2002–2006 Altima models with the QR25DE engine, though it can appear in later years too. Unlike generic codes like P0420 or P0171, P1364 is Nissan-specific so generic OBD-II definitions won’t help much. You’ll need a scanner that reads manufacturer-specific codes, or a professional-grade tool like a Nissan Consult-compatible device.

What’s usually wrong and what’s often mistaken for the problem?

The most frequent causes are:

  • A faulty ignition timing control solenoid (located near the intake manifold, often near the throttle body)
  • Corroded, loose, or damaged wiring or connectors leading to the solenoid
  • An open or short in the solenoid’s ground or power circuit
  • Rarely: a failing ECM but this should only be considered after ruling out simpler issues

A common mistake is assuming P1364 means bad spark plugs or coils. It doesn’t. Replacing those won’t fix it and doing so before checking the solenoid and its circuit wastes time and money. Another mistake is skipping basic checks: inspecting the connector for bent pins or moisture, verifying battery voltage at the solenoid with the key on, or testing resistance across the solenoid terminals (should be ~10–20 ohms on most Altima applications).

How to verify and test the ignition timing control solenoid

Start with a visual inspection: unplug the solenoid connector and look for corrosion or melted plastic. Then use a multimeter:

  1. Check for battery voltage at the harness side of the connector (key on, engine off). One pin should show ~12V.
  2. Check continuity from the solenoid’s ground wire back to the ECM ground point.
  3. Measure resistance across the solenoid’s two terminals. If it reads open (infinite ohms) or near zero, replace it.

If all electrical tests pass but the code returns, the issue may lie deeper like a failed internal driver in the ECM. But that’s uncommon. For context, similar behavior shows up in other vehicles: the P1364 meaning for BMW X3 E83 involves crankshaft position sensor correlation, while the P1364 OBD2 definition for Mazda CX-5 relates to camshaft timing oil control. So make sure you’re referencing Nissan-specific data not generic or cross-brand interpretations.

Next step: What to do right now

Don’t clear the code and drive hoping it goes away. P1364 rarely resolves itself. Instead:

  • Scan for pending or related codes especially P0340 (camshaft position sensor), P0335 (crankshaft position sensor), or P1365 (which often accompanies P1364)
  • Inspect the ignition timing control solenoid and its wiring clean connections, check for rodent damage or heat exposure
  • If resistance or voltage tests fail, replace the solenoid (OEM or high-quality aftermarket)
  • After replacement, reset the code and road-test for at least 10 minutes under varied conditions (idle, acceleration, highway cruise)

For reliable reference, Nissan’s official service manual (available through Nissan TechInfo) lists exact pinouts, resistance specs, and diagnostic flowcharts for P1364 on the QR25DE engine.