Error P1320 Nissan Wingroad: How to fix the ignition problem

Many owners Nissan Wingroad encounter a sudden illumination of the Check Engine light on the dashboard. Most often the scanner issues a code P1320, which indicates a problem in the ignition control circuit. This fault doesn't just signal a failure, it can lead to serious engine problems if ignored. It is especially important for owners of Japanese cars with SR or QG series engines to understand the nature of this code.

Error P1320 means “Ignition module control circuit malfunction.” Unlike European cars, where the ignition system is often integrated into coils, on Nissan Wingroad a separate ignition control module (IGN) is used. The signal from this module does not reach the ECU, or its voltage level is outside the permissible limits. This causes misfires, loss of power and increased fuel consumption.

Don't panic if you see this code. In most cases, the problem is solved by replacing one component or restoring contact in the wiring harness. However, in order not to waste money on unnecessary spare parts, it is necessary to carry out competent diagnostics. Ignoring the problem can lead to failure of the ECU itself, which is a much more expensive repair.

The essence of the error and the operation of the ignition system

Ignition system on Nissan Wingroad built on the principle of distributed ignition. The ignition control module receives the signal from the ECU and converts it into a high voltage pulse for the spark plugs. Code P1320 Fixed when the ECU does not see a confirmation signal from the module that a spark has been created. This feedback is critical for adjusting the ignition timing.

If the signal is lost, the control unit goes into emergency mode. The engine begins to run unstably and vibrations appear, especially at idle. The driver may notice that the car accelerates poorly and stalls when trying to move off under load. It is important to understand that an error can appear both at startup and during movement.

Symptoms are often disguised as problems with the fuel system or crankshaft position sensors. However, if you see exactly P1320, the focus should be on the electrical circuit of the ignition module. Nissan Wingroad has a specific layout where access to the module may be difficult due to attachments.

The main reasons for the failure

The most common reason for the code to appear P1320 - this is a failure of the ignition control module itself. Over time, the electronic components inside the case degrade due to high temperatures and vibrations. Nissan Wingroad it is often operated in conditions where the engine compartment is very hot, which speeds up this process.

The second most popular reason is a break or short circuit in the wiring. The wiring harness running from the ECU to the module may rub against body parts or the engine. Also, contacts in connectors often oxidize due to moisture or antifreeze. Crankshaft position sensor can also indirectly affect the operation of the system if its signal is unstable.

• 🔥 Overheating of the ignition module due to its proximity to the exhaust manifold.
• 💧 Oxidation of contacts in the module or ECU connector.
• 🔌 Broken wiring in the harness between the control unit and the module.
• 🔋 Low voltage in the on-board network or problems with the generator.

Sometimes the problem lies not in the electrical, but in the mechanics. If the ignition coil or spark plugs are faulty, the load on the module increases sharply. It may try to create a spark in the broken insulation, which leads to an overload and an error reset P1320. Therefore, before replacing the module, it is always worth checking the condition of the spark plugs and high-voltage wires.

Step-by-step fault diagnosis

First, you need to make sure that the error is really related to the ignition module. Connect the diagnostic scanner and read the code. If P1320 lights up constantly, the problem is serious. If it only appears when it is hot, it may be due to thermal degradation of the components inside the module.

Visual inspection is the first stage of diagnosis. Inspect the wiring harness for signs of melting, chafing of insulation, or traces of oil. Pay special attention to the connectors: they must be dry and tightly seated in place. If you see oxidation, it needs to be cleaned and treated with contact lubricant.

Use a multimeter to check the voltage at the module connector. You need to find the pinout diagram for your motor (QG15, QG18 or SR20). Check for power (usually 12V) and ground. Also check the signal wire for an open circuit. If there is power but no signal, the problem is in the module or ECU.

If you are not confident in your multimeter skills, it is better to contact a specialist. Incorrect connection may result in a short circuit and damage the ECU. For Nissan Wingroad this is especially true since replacing “brains” is very expensive.

The process of replacing the ignition module

If the diagnostics confirm that the module is faulty, it must be replaced. On Nissan Wingroad The module is usually mounted on a bracket next to the engine or in the engine compartment. Access to it can be free, but sometimes you have to remove the air filter or other elements for ease of operation.

Before starting work, be sure to disconnect the negative terminal of the battery. This will protect the electronics from a power surge when the connector is unplugged. Unscrew the module mounting bolts and carefully disconnect the connector. Pay attention to the condition of the seal so that moisture does not get inside the new device.

• 🛠️ Use the correct size wrench for the mounting bolts to avoid stripping the threads.
• 🔩 Before removing, mark the position of the module relative to the bracket.
• 🧼 Clean the installation site from dirt and oil before installing the new module.
• 🔋 After installation, check that all connectors are securely connected.

Installing a new module is done in the reverse order. Do not over-tighten the bolts, as the module housing may be plastic and burst. After connecting the battery, you need to reset the error using the scanner or disconnect the terminal for 10-15 minutes. Start the engine and check if the error disappears.

⚠️ Attention: Never try to repair the ignition module yourself by melting contacts or soldering chips. This is a temporary solution, which often leads to repeated failure and can damage the ECU due to unstable parameters.

Repair of wiring and contacts

If the module is OK, the problem is almost certainly in the wiring. On Nissan Wingroad harnesses often fray where they are bent or come into contact with hot engine parts. Inspect the wire coming from the ECU to the module. If the insulation is damaged, it must be repaired using heat shrink and electrical tape.

A common problem is oxidation of the contacts inside the connector. Moisture gets inside and creates a layer of oxides, which increases resistance. This leads to a voltage drop and false alarms. P1320. To clean, use a special contact cleaner or fine sandpaper.

If a wire breaks inside the insulation, it must be replaced entirely. Do not try to simply twist the wires and wrap them with electrical tape - such a connection will quickly oxidize and fail again. It is best to stretch the new wire along the standard route, securing it with clamps in the right places.

In some cases, the problem may be in the ECU connector itself. The contacts inside the control unit may become bent or oxidized. This requires dismantling the ECU and inspecting it. If you see signs of corrosion, the board may need to be professionally cleaned.

How to check wiring integrity with a multimeter?

Turn on dialing mode. Apply one probe to the contact on the module connector, the second to the corresponding contact on the ECU connector. If the multimeter beeps, the circuit is intact. If not, it's a break.

Impact on the engine and consequences of ignoring

Ignoring the error P1320 can lead to serious consequences. Misfire means that fuel does not burn in the cylinder, but ends up in the exhaust system. This leads to overheating of the catalyst and its failure. Replacing a catalyst costs significantly more than an ignition module.

The engine operates in an unstable mode, which increases wear on the piston group. Incorrect mixture formation and misfires can lead to scoring in the cylinders, especially on series engines QG. The load on the starter and battery also increases due to repeated starting attempts.

Fuel consumption increases sharply as the ECU tries to compensate for the loss of power by enriching the mixture. This is not only economically unprofitable, but also harmful to the environment. Exhaust gases become more toxic, and the car may not pass inspection.

Parameter	Normal condition	When error P1320
Engine operation	Stable, no vibration	Jerking, dips, vibration
Fuel consumption	Normative	Increased by 15-30%
Power	Full	Reduced, no traction
Catalyst condition	Holistic	Risk of overheating and destruction

It is especially dangerous to continue driving with the Check Engine Light on during the winter. A cold start already puts a strain on the engine, and ignition errors can lead to the car simply not starting in cold weather. In this case, a tow truck will be inevitable.

Prevention and selection of spare parts

To avoid the error reappearing P1320, you need to choose quality spare parts. Original modules Nissan They last a long time, but their price is high. Similar products from trusted brands such as Denso or NTK, can be an excellent alternative. Avoid cheap Chinese knockoffs, which often break down after a couple of months.

Regularly checking the condition of your wiring and connectors will help prevent problems. Once every six months, inspect the harnesses for chafing and oxidation. If you notice traces of moisture, immediately dry and treat the contacts with a protective compound.

• ✅ Use original connectors when replacing wiring.
• ✅ Clean contacts with alcohol before assembly.
• ✅ Protect the harnesses from overheating with special covers.
• ✅ Change spark plugs and wires in a timely manner.

Don't forget about regular maintenance. Replacing spark plugs and checking the ignition system are included in the basic maintenance plan. If you notice that the engine has started to run erratically, do not wait for an error to appear on the panel. Timely diagnosis will save you money and nerves.

Frequently asked questions from owners

Is it possible to drive with error code P1320?

You can drive, but not for long. This will lead to increased fuel consumption, loss of power and possible catalytic converter failure. It is recommended to correct the problem as soon as possible.

Why does the error only appear when it's hot?

This often indicates degradation of the ignition module's internal components. When heated, the resistance changes and the signal stops passing. There may also be a problem with the wiring, which expands when heated.

Is it possible to reset the error without a scanner?

Yes, you can disconnect the negative terminal of the battery for 10-15 minutes. However, if the fault is not corrected, the error will return after several engine starting cycles.

Does P1320 affect engine starting?

Yes, in some cases the engine may not start or may stall immediately after starting if the module has completely failed or lost communication with the ECU.

How often should the ignition module be replaced?

The average service life of the module is 100-150 thousand kilometers. However, it depends on operating conditions and the quality of spare parts. When the first symptoms of misfire appear, it is worth checking the module.