Error code 1320 on Nissan Sunny FB15 (also known as Nissan Almera N17 in some regions) is one of those malfunctions that can unsettle even experienced car owners. It signals problems in the engine management system, but its true cause often remains a mystery without in-depth diagnostics. Unlike common errors like P0300 (misfires), 1320 does not have a universal solution - its manifestations vary from floating speed to complete loss of power.

In this article we will look at all possible reasons errors 1320 on FB15, ranging from banal oxidation of contacts to serious malfunctions ECU (electronic control unit). You will learn how to correctly read fault codes, which components to check first, and what to do if the error returns after a reset. We will pay special attention unique feature Sunny FB15: on these models, error 1320 is often associated with incorrect operation of the camshaft position sensor at low temperatures, which is not typical for other generations Nissan.

What does error 1320 mean? Nissan Sunny FB15?

Code 1320 in the self-diagnosis system Nissan belongs to the category "Camshaft Position (CMP) Sensor Circuit Malfunction". However, in practice this definition is too narrow. On FB15 the error may indicate:

  • 🔧 Wiring problems between ECU and camshaft sensor (breaks, short circuits, oxidation).
  • 🔄 Signal mismatch between crankshaft sensors (CKP) and camshaft (CMP).
  • 💻 Firmware glitches ECU, especially after incorrect chip tuning.
  • ⚡ Eating problems sensor (for example, voltage drop in the circuit +5V).

It is important to understand that 1320 - this is not a sentence, but signal to action. In the early stages, the problem may only appear during a cold start or under load, but ignoring the error leads to:

  • ⚠️ Engine transition to emergency mode (speed limit to 3000 RPM).
  • ⚠️ Increased fuel consumption by 15–25%.
  • ⚠️ Jerking during acceleration due to incorrect angular position of the camshaft.
📊 How often do you get error 1320?
  • Only on cold start
  • During acceleration/under load
  • Check Engine Light Is Constantly On
  • Disappears after reset but comes back
  • I don't know, I just diagnosed it

Causes of error 1320: from simple to complex

Diagnosis of the error 1320 should go according to the principle “from cheap to expensive”. Start by checking the obvious reasons before sinning ECU or mechanical engine problems.

1. Problems with the camshaft sensor (CMP)

On Nissan Sunny FB15 used inductive sensor camshaft (original article number - 23731-4M500 or 23731-4M505). Its malfunction appears:

  • 🔍 Physical damage (cracks on the case, traces of oil inside the connector).
  • 📉 Unstable signal when the engine warms up (checked with an oscilloscope).
  • 🔌 Oxidation of contacts in the connector (especially important for humid climates).

🔧 How to check? Remove the sensor and inspect it for damage. Test the circuit with a multimeter:

  • Resistance between pins 1–2 there must be 500–1500 Ohm.
  • Resistance between any pin and body - infinity (no short circuit).

💡

If the camshaft sensor appears to be working properly, but error 1320 appears only at sub-zero temperatures, try apply dielectric grease to the connector contacts. This will temporarily solve the oxidation problem until the sensor is replaced.

2. Malfunctions of wiring and connectors

Wiring problems are the most common cause of the error. 1320 on FB15. Particularly vulnerable:

  • 🔌 Camshaft sensor connector (located to the valve cover, often filled with oil).
  • 🔗 Wiring harness from sensor to ECU (runs along the cylinder head, may fray).
  • 🔋 Power supply +5V (common for several sensors, false errors occur when the voltage drops).

⚠️ Attention: On Sunny FB15 with engine GA16DE The camshaft sensor wiring harness often rubs against the intake manifold bracket. Check the insulation visually!

Knot Typical fault How to diagnose
Camshaft sensor Broken internal winding, contamination Continuity test with a multimeter, oscilloscope
Sensor connector Oxidation, poor contact Visual inspection, cleaning contacts
Wiring harness Chafing, short to ground Continuity test for open/short circuit
ECU Firmware failures, damage to input circuits Diagnostics with a scanner, flashing

3. Problems with ECU and firmware

If the sensor and wiring are ok, but there is an error 1320 keeps appearing, maybe it's the culprit electronic control unit. Typical scenarios:

  • 💾 Calibrations failed after disconnecting the battery or chip tuning.
  • 🔥 Damage to input circuits ECU (for example, after a short circuit in the sensor).
  • 🖥️ Incompatible firmware (relevant for cars with replaced ECU).

🔧 How to check ECU?

  1. Reset the errors with a scanner and see if 1320 again.
  2. Check the voltage at the contacts ECU, responsible for the camshaft sensor (the contact diagram is in the manual).
  3. If you have access to diagnostic equipment, read freeze frame data (data about engine parameters at the time of the error).

What to do if ECU faulty?

If the control unit is damaged, you can try to restore it by flashing or replacing the memory chip. However, on Sunny FB15 original ECU (article 23710-4M500) it is often cheaper to buy a used one in good condition than to repair it. Important: when replacing ECU will be required immobilizer link (otherwise the engine will not start).

Step-by-step instructions: how to resolve error 1320

If you decide to do the repairs yourself, follow this algorithm. It is designed taking into account the specifics Nissan Sunny FB15 and allows you to eliminate most causes of the error 1320 without contacting the service.

☑️ Diagnosis of error 1320

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Step 1: Reading Error Codes

First, make sure that the error 1320 is the only problem. Use:

  • 📱 Diagnostic scanner (For example, Launch CReader or ELM327 with the program Torque Pro).
  • 🔧 Self-diagnosis Nissan (for FB15 with a manual transmission: turn on the ignition, press the gas pedal all the way 5 times in 5 seconds - Check Engine codes will start flashing).

⚠️ Attention: If together with 1320 there are errors P0340 (no camshaft sensor signal) or P0335 (crankshaft sensor malfunction), the problem is most likely in the wiring or ECU.

Step 2: Checking the Camshaft Sensor

To remove the sensor from FB15:

  1. Remove the decorative engine cover.
  2. Disconnect the sensor connector (the lock must be pressed up).
  3. Unscrew the sensor with a key 10 mm.

🔧 Advice: Before installing a new sensor, clean the seat from oil and metal shavings - they can cause false alarms.

Step 3: Wiring Diagnostics

Ring the circuit from the sensor to ECU according to the scheme:

  • 🔴 Contact 1 sensor → contact 25 ECU (signal).
  • 🟢 Contact 2 sensor → contact 47 ECU (mass).
  • ⚪ Contact 3 sensor → contact 105 ECU (+5V).

📌 Normal values:

  • Resistance between contacts 1–2 sensor: 500–1500 Ohm.
  • Resistance between contact 3 and mass: 0 ohm (check +5V circuit).

Step 4: Check ECU and error reset

If the sensor and wiring are OK:

  1. Clear errors with a scanner.
  2. Disconnect the battery for 10 minutes (to reset adaptations ECU).
  3. Start the engine and check if the error appears again.

🔧 If an error is returned:

  • Try it update firmware ECU (specialized equipment required).
  • Check power circuit ECU (contact 1 — +12V, contact 2 - mass).

💡

On Nissan Sunny FB15 with engine GA16DE error 1320 in 60% of cases is associated with oxidation of the camshaft sensor contacts or a break in the signal wire. Start diagnostics with these nodes!

Frequently asked questions and myths about error 1320

Around the error 1320 There are a lot of rumors going around. Let's look at the most popular questions and misconceptions.

Myth 1: "Error 1320 is always the fault of the camshaft sensor"

🚫 Reality: The sensor is indeed a common cause, but in 30% of cases the problem lies in:

  • 🔌 Wiring (grinding, short circuit).
  • 💻 ECU (firmware failures, damaged inputs).
  • ⚙️ Mechanical faults (for example, timing marks are displaced).

Myth 2: “You can just reset the error and move on”

⚠️ Danger: Ignoring the error 1320 leads to:

  • 🔥 Engine overheating due to incorrect angular position of the camshaft.
  • 💰 Increased fuel consumption by 20–30%.
  • 🚗 Jerks and failures when accelerating, which is dangerous in city traffic.

Myth 3: "On FB15 error 1320 can only be cured by replacement ECU"

✅ Truth: Replacement ECU required only in 5–10% of cases. For the rest it helps:

  • 🔧 Cleaning the sensor contacts.
  • 🔄 Reflashing the unit (if the error appeared after chip tuning).
  • 🔌 Wiring repair (soldering breaks, replacing connectors).

When to contact service: signs of serious problems

Not all faults cause an error 1320, you can fix it yourself. Contact a specialist if:

  • ⚡ The error appears immediately after reset (there may be problems with ECU).
  • 🔧 Replacing the sensor and cleaning the contacts do not give results.
  • 💥 Engine won't start or works with strong vibrations.
  • 🔥 Lights up on the dashboard additional errors (For example, P0300, P0335).

🔧 What will the service do?

  • 📊 In-depth diagnostics with the help Nissan Consult or Launch X431.
  • 🔧 Mechanical check (timing timing marks, camshaft condition).
  • 💻 Reflashing or repair ECU (if necessary).

⚠️ Attention: On Sunny FB15 with GA16DE some services mistakenly change crankshaft sensor instead of the camshaft sensor due to similar symptoms. Ask your technician which sensor he is diagnosing!

Prevention of error 1320: how to avoid recurrence

To make a mistake 1320 did not return after repair, follow these recommendations:

  • 🛠️ Clean your contacts regularly sensors (every 30,000 km).
  • 🔌 Check the condition of the wiring near the intake manifold (often chafed).
  • 💻 Avoid "artisanal" chip tuning - incorrect firmware ECU often leads to error 1320.
  • 🚗 Follow the timing marks — their displacement causes a mismatch of sensor signals.

🔧 Advice for owners FB15: If you often drive off-road or in wet weather, treat the sensor connectors silicone grease - this will prevent oxidation of contacts.

FAQ: Answers to frequently asked questions about error 1320

Is it possible to drive with error 1320?

Short term - yes, but not recommended. The engine will operate in emergency mode (limited speed, increased fuel consumption). Driving for a long time with an error may lead to overheating And accelerated wear timing parts.

How much does it cost to fix error 1320?

The cost depends on the reason:

  • 🔧 Replacing the camshaft sensor: 1 500–3 000 ₽ (with work).
  • 🔌 Wiring repair: 2 000–5 000 ₽.
  • 💻 Flashing ECU: 5 000–10 000 ₽.

Can error 1320 appear after washing the engine?

Yes, if water gets into the camshaft sensor connector or ECU. Don't turn on the ignitionuntil the contacts are dry! Dry them with compressed air or treat them WD-40.

How to distinguish a faulty camshaft sensor from a faulty crankshaft sensor?

If the crankshaft sensor is faulty (CKP) engine won't start at all. Error 1320 (camshaft sensor) allows it to start, but the engine is unstable, especially at idle.

Where is the camshaft sensor located on Nissan Sunny FB15?

It is located on the back of the cylinder head, next to the first cylinder. To get to it, remove the decorative engine cover. The sensor is attached with one bolt to 10 mm.