Nissan Sunny is a popular car with a reliable reputation, but even it is not immune to electronic glitches. Error P1320 - one of those that can take the owner by surprise. It is associated with the ignition system and often manifests itself as unstable engine operation, jerking during acceleration, or even a complete engine stop. In this article, we will look in detail at what is hidden behind this code, how to properly diagnose it, and what steps to take to fix the problem.

Code P1320 in Nissan Sunny indicates a malfunction in the ignition control circuit. Most often it occurs due to problems with the ignition coils, high-voltage wires or the engine control unit itself (ECU). But don't rush to change parts at random - the error may mask deeper problems, for example, a malfunction of the crankshaft position sensor or even mechanical damage to the cylinders. Next, we will look at all possible causes and methods for eliminating them.

What does error P1320 mean on Nissan Sunny?

Error P1320 stands for Ignition Signal Primary — a problem in the primary circuit of the ignition system. B Nissan Sunny (especially models with engines GA16DE, SR20DE or QG18DE) this code usually signals:

  • 🔥 Ignition coil malfunctions (break, short circuit or wear)
  • ⚡ Problems with high-voltage wires (insulation breakdown, contact oxidation)
  • 📉 Malfunctions ECU (incorrect control signals)
  • 🔧 Mechanical problems (for example, damage to the crankshaft position sensor)

It is important to understand that P1320 - this is not a verdict, but only an indication of the area of ​​the problem. For example, if the ignition coil fails, the engine may stall, lose power, or stall at idle. In some cases, the error appears sporadically, which complicates diagnosis. Therefore, the first thing you need to do is read error logs using a scanner (for example, Launch CReader or ELM327) and check related codes.

⚠️ Attention: If the error P1320 accompanied by code P0300 (multiple misfires), most likely the problem is in the coils or spark plugs. Do not ignore this combination - it can damage the catalytic converter.

The main causes of error P1320

To effectively eliminate P1320, you need to understand its root cause. Below we have listed the most common scenarios that owners encounter Nissan Sunny:

Reason Symptoms Verification method
Faulty ignition coil Troubling, loss of power, jerking during acceleration Testing with a multimeter, replacing with a known good one
Breakdown of high-voltage wires Misfires, especially in wet weather Visual inspection in the dark (sparks), resistance measurement
Oxidation of contacts ECU or coil connectors Occasional error, unstable idle Cleaning contacts, checking the reliability of connections
Malfunction of the crankshaft position sensor (CKP) The engine stalls, does not start, or runs intermittently Diagnostics with an oscilloscope, sensor replacement

Particular attention should be paid ignition coils. B Nissan Sunny they often fail due to overheating or aging insulation. If, upon visual inspection, cracks or traces of melting are visible on the coil, it must be replaced. Also check resistance of primary and secondary windings multimeter - it must correspond to the values ​​specified in the manual (usually 0.5–1.0 Ohm for primary and 8–12 kOhm for secondary).

📊 What engine does your Nissan Sunny have?
  • GA16DE
  • SR20DE
  • QG18DE
  • Other
  • I don't know

Diagnosing error P1320: step-by-step instructions

To pinpoint the cause P1320, follow this algorithm. Let's start with the simplest checks and gradually move on to more complex ones:

  1. Read all errors to the scanner. Sometimes P1320 accompanied by other codes (for example, P0301–P0304 - misfire in a specific cylinder), which will narrow down the search.
  2. Check high voltage wires. Inspect them for cracks, punctures or oxidation. Resistance must be within 5–10 kOhm (depending on the model).
  3. Test the ignition coils. Swap them - if the error goes to another cylinder, the coil is to blame.
  4. Use an oscilloscope. This will help identify problems with the crankshaft sensor signal or incorrect operation. ECU.

If you don't have an oscilloscope, you can use a multimeter. For example, to check a coil:



1. Отсоедините разъем катушки.


2. Замерьте сопротивление между контактами 1 и 2 (первичная обмотка).


3. Замерьте сопротивление между контактом 2 и высоковольтным выводом (вторичная обмотка).


4. Сравните с номинальными значениями из мануала.

☑️ Diagnostics P1320

Done: 0 / 4

Don't forget about mechanical reasons. For example, if oil or fuel enters the cylinder due to faulty rings or injectors, this can cause misfire and P1320. In this case, a compression test or fuel system diagnostics will be required.

How to fix error P1320: from simple to complex

Depending on the cause, repair methods will vary. Let's start with the most accessible and cheapest solutions:

  • 🔧 Replacement of high-voltage wires. If they are old or have holes, replacing them often solves the problem. The cost of the set is from 1,500 rubles.
  • ⚡ Cleaning contacts ECU and coil connectors. Oxidation or poor contact may cause false errors. Use a special contact cleaner (for example, CRC Contact Cleaner).
  • 🔥 Replacing a faulty ignition coil. If tests show it is not working, replace it with a new one or a used one in good condition. Original reel for Nissan Sunny costs about 3,000–5,000 rubles.
  • 📊 Flashing or replacement ECU. In rare cases, the problem lies in the control unit software. This is the most expensive option (from 10,000 rubles).

Critical Information: If P1320 still appears after replacing the coils and wires, be sure to check the crankshaft position (CKP) sensor. Its malfunction can simulate ignition problems, but requires a fundamentally different approach to repair.

💡

Before replacing the ignition coils, reset the errors with a scanner and drive 20–30 km. If P1320 does not return, the problem could be a temporary ECU failure.

Common repair mistakes and how to avoid them

Many owners Nissan Sunny make typical mistakes when troubleshooting P1320, which leads to repeated malfunctions or additional costs. That's what can't do:

⚠️ Attention: Never replace ignition coils one at a time unless you are sure of the reason. If the problem is ECU or wires, replacing the coils will not help, but will only increase costs.
  • 🚫 Ignore related errors. For example, if together with P1320 There is P0340 (camshaft position sensor), remove it first.
  • 🚫 Buy cheap non-original spare parts. Poor quality coils or wires can fail after a few thousand kilometers.
  • 🚫 Do not check the mechanical part. Sometimes P1320 appears due to low compression or faulty valves.

Another common mistake is resetting errors without eliminating the cause. If you just erase P1320 scanner, she will return in a few kilometers. Always address the root cause!

Prevention of error P1320: how to prevent recurrence

To minimize the risk of P1320 in the future, follow these guidelines:

  • 🔧 Check the condition of the spark plugs and wires regularly. Replace them every 30,000–50,000 km (or according to regulations).
  • ⚡ Use quality fuel. Bad gasoline leads to carbon deposits on the spark plugs and misfires.
  • 📉 Monitor the status ECU. Avoid short circuits when connecting the battery and use voltage stabilizers.
  • 🔥 Don't ignore the first symptoms. If the engine starts to stall or jerks appear, immediately carry out diagnostics.

Pay special attention high voltage wires. B Nissan Sunny they often suffer from overheating and moisture. Inspect them regularly for cracks and breaks, especially before the winter season. If the wires are older than 5 years, it is better to replace them preventively.

💡

Regular diagnostics with a scanner (every 10,000 km) will help identify P1320 at an early stage, when repairs will be cheaper.

FAQ: Frequently asked questions about error P1320 on Nissan Sunny

Is it possible to drive with error code P1320?

Short term - yes, but not recommended. Driving for a long time with this error can lead to damage to the catalyst, overheating of the engine or failure ECU. If the engine stalls or stalls, it is better to fix the problem immediately.

How much does it cost to repair a P1320 code?

The cost depends on the reason:

  • Replacement of wires - from 1,500 rubles.
  • Replacement coils - from 3,000 rubles (for one).
  • Diagnostics ECU - from 2,000 rubles.
  • Replacement of the crankshaft sensor - from 1,800 rubles.

On average elimination P1320 costs 3,000–8,000 rubles.

Can P1320 be caused by bad gas?

Yes, but indirectly. Bad fuel leads to carbon deposits on the spark plugs, which causes misfires. As a result ECU fixes an error P1320. If symptoms appear after refueling, try draining the gasoline and refilling with quality gasoline.

How to reset error P1320 without a scanner?

You can disconnect the battery terminal for 10-15 minutes. However this will reset everything mistakes, not just P1320. Moreover, if the cause is not eliminated, the error will return. It is better to use a scanner (for example, ELM327 for 500 rubles).

What other errors often accompany the P1320?

Frequent combinations:

  • P0300–P0304 - misfires.
  • P0340 — camshaft position sensor.
  • P0171/P0174 - lean mixture (may be due to misfires).