Error 1320 on Nissan Bluebird Sylphy: interpretation and solutions

Error code 1320 on the dashboard Nissan Bluebird Sylphy is one of those diagnostic mysteries that can unsettle even experienced car owners. Unlike obvious faults such as engine overheating or low oil level, this error often remains a “dark horse”: its description in manuals is sparse, and symptoms can range from barely noticeable failures to complete loss of functionality of individual systems. If your Sylphy (especially models G11 or G12) produces this code, do not rush to panic - in 80% of cases the problem is solved without major repairs.

In this article we will not just list possible reasons, but will analyze them in relation to specific generations Bluebird Sylphy, years of manufacture and transmission types. You will learn how read the error correctly (spoiler: not all scanners show it correctly), which nodes to check first, and why ignoring this code can result in failure of the stabilization system or incorrect operation of the automatic transmission. Let’s also reveal the myth that error 1320 is always associated with the throttle position sensor (this is only one version!).

What does error 1320 mean on Nissan Bluebird Sylphy

Code P1320 (or just 1320 on the dashboard) in the diagnostic system Nissan belongs to the category manufacturer codes (manufacturer-specific codes). This means that its decoding may differ even between different models of the same brand. For Bluebird Sylphy (including versions for the Japanese domestic market called Nissan Sylphy) error 1320 most often signals:

• 🔍 Signal mismatch between the engine control unit (ECU) and throttle position sensor (TPS).
• ⚡ Problems in the power circuit or sensor grounding TPS (breaks, corrosion, poor contact).
• 🛠️ Mechanical wear throttle assembly or clogging of its channels (relevant for engines MR20DD And HR16DE).
• 📶 Firmware failure ECU after an incorrect update or “rollback” to the previous version.

It is important to understand that Sylphy with the system e-Power (hybrid versions) this error may indicate a malfunction in inverter or the hybrid system control unit. Here the diagnosis becomes more complicated, as it requires specialized equipment for reading codes HV systems (high-voltage).

Interesting fact: in some Asian markets error 1320 in Nissan Bluebird Sylphy may be accompanied by additional code P2101 (throttle valve actuator malfunction). This indirectly confirms the version of problems in the throttle assembly, but does not exclude other causes.

Reasons for error 1320: from simple to complex

In order not to waste time on useless checks, we have compiled priority list of reasons, sorted by frequency of occurrence and difficulty of elimination. Start the diagnosis from the first point and move down if the problem is not found.

1. Throttle valve contamination. On engines HR16DE And MR20DD Due to the peculiarities of the crankcase ventilation system, the damper becomes overgrown with carbon deposits by 60–80 thousand km. This leads to “sticking” of the mechanism and incorrect signals TPS.
2. Oxidation of TPS connector contacts. Humidity, temperature changes and vibrations destroy contacts. Often the problem is solved by simply cleaning or replacing the connector.
3. Throttle Position Sensor Malfunction. TPS may produce a nonlinear signal or be completely silent. Checked with a multimeter (the resistance between the terminals should change smoothly when the damper is opened).
4. Wiring problems. Breaks or short circuit in the harness between ECU And TPS. Pay special attention to the area near the exhaust manifold - wires there often melt from high temperatures.
5. ECU firmware failure. Relevant after chipping or unsuccessful updates. In this case, error 1320 may be accompanied by other codes, for example, P0605 (error ROM).
6. Mechanical wear of the throttle assembly. On cars with mileage over 150 thousand km, the damper axle or return spring may wear out.

On hybrid Sylphy (e-Power) the following are added to the list:

• 🔋 Malfunction DC/DC converter (converts the high voltage of the hybrid battery into 12V for the on-board network).
• 🔌 Problems with inverter or its cooling system.

How to check the throttle valve without a scanner?

Open the hood and have an assistant gently press the gas pedal. Manually check the valve movement - it should be smooth, without jamming. If the valve “sticks” or moves jerkily, it must be cleaned or replaced. Also pay attention to the axle play - if it exceeds 1-2 mm, the unit must be replaced.

How to properly diagnose error 1320

First rule: don't throw an error until the end of the diagnosis! Many car owners, seeing 1320 on the dashboard, immediately erase it through a scanner or by disconnecting the battery. This leads to the loss of valuable information: associated codes, error history and system operating parameters at the time of failure.

For an accurate diagnosis you will need:

• 📱 Diagnostic scanner with protocol support Nissan Consult III (For example, Launch X431 or Autel MaxiCOM). Regular ELM327 adapters may not show all parameters.
• 🔧 Multimeter to check resistance TPS and voltage in the circuit.
• 🔍 Endoscope (optional) for inspecting the throttle assembly without dismantling.

Step-by-step diagnostic algorithm:

Parameter	Normal value	Symptoms of a problem
Resistance TPS (pins 1–2)	0.5–4.5 kOhm (smooth change)	Sudden jumps, breaks or short circuits
Voltage at TPS (pin 3)	5 V (from ECU)	None or below 4.5 V
XX speed (with warm engine)	650–750 rpm	Floating speed, dips
Throttle position (%)	0% (damper closed), 100% (fully open)	Inconsistency with the actual situation

If the scanner shows that error 1320 appears only on a hot engine, the problem most likely lies in thermal expansion of the contacts or degradation of the sensor TPS. In this case, replacing the sensor or treating the contacts with a special lubricant (for example, CRC Contact Cleaner).

Step-by-step instructions for resolving error 1320

Depending on the identified cause, repair methods will vary. Below - detailed instructions for each case, taking into account the nuances Nissan Bluebird Sylphy.

1. Cleaning the throttle body

The simplest and most effective solution for most cases. You will need:

• 🧴 Throttle body cleaner (eg Liqui Moly Pro-Line or Wynn’s).
• 🧻 Lint-free rag or paper towels.
• 🔧 Screwdriver (for dismantling the air duct).

Procedure:

1. Remove the air duct connecting the air filter to the throttle body.
2. Apply cleaner to the valve and channels, avoiding any plastic parts.
3. Remove carbon deposits with a rag (do not use metal brushes!).
4. Check the movement of the damper - it should open/close without jamming.
5. Reassemble everything in reverse order and reset the error using the scanner.

2. Replacing the throttle position sensor (TPS)

If cleaning does not help and the scanner shows a non-linear signal TPS, the sensor must be replaced. For Nissan Bluebird Sylphy Original sensors with article numbers are suitable:

• 22680-4M000 (for engines HR16DE)
• 22680-AL500 (for MR20DD)

Important! When replacing TPS:

• ⚠️ Do not touch the sensor contacts with bare hands (risk of static discharge).
• ⚠️ Make sure the new sensor is compatible with the firmware version of your ECU.

3. Wiring repair

If the problem is an open or short circuit, proceed as follows:

1. Disconnect the connector TPS And ECU.
2. Test the circuit with a multimeter in diode test mode (pin 1 of connector TPS → pin 45 ECU; pin 2 → pin 46; pin 3 → pin 101).
3. If a break is detected, restore the circuit by soldering or replacing the harness.

On Sylphy with mileage over 100 thousand km, the insulation of wires near the exhaust manifold often suffers. Use heat-resistant corrugation to protect the harness after repair.

Error 1320 on hybrid Nissan Bluebird Sylphy (e-Power)

Hybrid versions Sylphy require a special approach. Here error 1320 is often associated with:

• 🔋 Malfunction of the DC/DC converter (code P0A7F may appear in parallel).
• 🛡️ Failure in the inverter control system (requires diagnostics with a scanner that supports HV systems).
• 🔌 Problems with high voltage battery (low voltage or module fault BMS).

To diagnose the hybrid system:

1. Connect the scanner and select the mode Hybrid/EV Battery.
2. Check the voltage at the high-voltage battery terminals (should be ~200–300V depending on the model).
3. Read fault codes HV systems (they may not be displayed on the dashboard!).

Attention! Working with high-voltage components requires special training. If you do not have experience working with hybrids, contact a service with a certificate Nissan EV/Hybrid.

Frequently asked questions and misconceptions about error 1320

There is a lot of conflicting information on the Internet about error 1320. Let's look at the most common myths and questions.

❓ Is it possible to drive with error 1320?

Short term - yes, but with reservations. If the error is not accompanied by power failures, jerking or fire Check Engine, you can get to the service. However, ignoring the problem for a long time can lead to:

• 🔥 Overheating of the catalyst (due to incorrect fuel mixture).
• 🛑 Failure of the stabilization system (ESP).
• 🔧 Accelerated wear Automatic transmission (if the error is related to the signal TPS).

❓ Why does the error appear only on a cold engine?

This is a typical symptom oxidized contacts or sensor degradation TPS. When heated, the metal expands and contact is temporarily restored. Solution:

1. Clean the connector contacts TPS special liquid (for example, Contact 60).
2. Replace the sensor if cleaning does not help.

❓ Can error 1320 be caused by bad gasoline?

No, directly - no. However, low-quality fuel can lead to:

• 🔥 Throttle valve contamination (which will indirectly cause 1320).
• 🛢️ Deposits on intake valves (relevant for engines with direct injection).

If the error appears after refueling, first check the condition of the valve and spark plugs.

❓ How to reset error 1320 without a scanner?

You can disconnect the negative terminal of the battery for 10–15 minutes. However this not recommended, because:

• ⚠️ Adaptations will be reset ECU (the engine will run unstable until it learns itself).
• ⚠️ The settings of the radio, climate control and other systems may be reset.

It is better to use a scanner or contact a service center.

Prevention of error 1320: how to avoid recurrence

To prevent error 1320 from returning after repair, follow these recommendations:

• 🔧 Clean the throttle valve every 30–40 thousand km (or more often if you operate the car in urban mode).
• ⚡ Check the on-board voltage once every six months. A drop below 11.8V may cause malfunctions ECU.
• 🛡️ Use fuel with an octane rating of at least 95 (for engines MR20DD And HR16DE).
• 🔌 Process contacts connectors TPS And ECU protective lubricant (eg CRC 2-26).

On hybrid versions additionally:

• 🔋 Monitor the condition of the high-voltage battery (check the voltage and cell balance once a year).
• 🛠️ Update your firmware regularly HV systems in the official service.

Attention! If your Nissan Bluebird Sylphy equipped with a system Start/Stop, error 1320 may appear due to frequent engine starts. In this case, it is recommended to disable the system (if the firmware allows it) or increase the frequency of maintenance.

Conclusion: what to do if nothing helps

If you've tried all the methods and still receive error 1320, the problem may be deeper:

• 🔧 Malfunction ECU (reflashing or replacement of the unit is required).
• 🔌 Problems with canbus (breaks or short circuit in the network CAN).
• 🛡️ Mechanical damage throttle assembly (for example, after an accident).

In such cases, you cannot do without professional diagnostics. Contact a service that specializes in Nissan, with equipment for deep scanning (Nissan Consult III/IV). The cost of diagnosing error 1320 in official centers is about 1500–2500 rubles, but this is cheaper than the “poke method” of replacing parts at random.

Remember: Error 1320 rarely occurs on its own. Most often it signals complex of problems — for example, dirty damper + oxidized contacts + adaptation failure ECU. Therefore, a systematic approach to diagnostics and repair is the key to a long-term solution to the problem.