Nissan March — a compact and reliable car, but even it is not immune from breakdowns. If the dashboard lights up check engine, and a visit to the service is postponed, self-diagnosis will help you identify the problem yourself. In this article we will look at how to activate the verification mode for March K13 (2010–2016) and K12 (2002–2010), we will decipher the error codes and give recommendations for eliminating them.
The method works without additional equipment - it is enough to know the sequence of actions and be able to read the blinking indicators. However, remember: self-diagnosis only shows basic fault codes, and for a deep check (for example, ABS sensors or airbags) you will need a scanner ELM327 or Consult-III.
How to run self-diagnosis on Nissan March
The procedure for activating the verification mode is the same for most models Nissan with OBD-II, but for March there are nuances. You don't need any tools - just the ignition key and attention to the flashing lights.
Instructions for March K13 (2010–2016) and K12 (2002–2010):
- Turn off the ignition and make sure all doors are closed.
- Press and hold the button
TRIP RESET(daily mileage reset) on the dashboard. - Turn the key to position
ON(ignition on, engine off). - Keep holding
TRIP RESETwithin 5–10 secondsuntil all indicators on the panel start flashing. - Release the button - the system will go into self-diagnosis mode. Indicator check engine will begin to flash, displaying error codes.
If the procedure does not work the first time, repeat the steps while holding down the button TRIP RESET longer. On some versions March K12 may be required Press 3 times gas pedal before turning on the ignition.
- K13 (2010–2016)
- K12 (2002–2010)
- Other model
- I don't know
Decoding error codes by check blinking
Self-diagnosis system Nissan March issues codes in the format long and short blinks. For example, code 12 will look like 1 long flash (1) + 2 short flashes (2). There is a pause between error codes 2–3 seconds, and after all codes are issued, the cycle repeats.
Below is a table with a breakdown the most common codes for engines HR12DE (1.2 l), HR15DE (1.5 l) and CR14DE (1.4 l diesel):
| Error code | Description of the malfunction | Possible reasons |
|---|---|---|
12 |
No signal from camshaft position sensor | Faulty sensor, broken wiring, faulty computer |
13 |
There is no signal from the coolant temperature sensor | Poor contact, sensor failure, low antifreeze level |
21 |
Problems with the throttle position sensor | Throttle contamination, sensor malfunction, open circuit |
34 |
Low absolute pressure (MAP) sensor signal | Air leak, sensor malfunction, clogged air filter |
43 |
Malfunction of the ignition system (misfire) | Worn spark plugs, breakdown of high-voltage wires, coil malfunction |
If the system issues a code 55, it means end of diagnosis - there are no errors. If there are several codes, write them down in order. For example, the sequence 12 → 34 → 55 speaks of two problems: with the camshaft sensor and the pressure sensor.
What to do if the codes are repeated endlessly?
If the system gets stuck on one code (for example, 12-12-12...), this may indicate critical ECU malfunction or short circuit in the sensor circuit. In this case, the self-diagnosis should be interrupted (turn off the ignition) and contact service to check the control unit.
Typical errors and ways to resolve them
Not all codes require immediate repair. Some errors can be fixed on your own without the help of an auto electrician. Let's consider most common problems on Nissan March and ways to solve them.
- 🔧 Code 13 (coolant temperature sensor): Check the antifreeze level and the condition of the sensor contacts. If the fluid is normal and the contacts are clean, replace the sensor (cost ~800–1500 rubles).
- ⚡ Code 21 (throttle valve): Clean the choke with carburetor cleaner (e.g. LIQUI MOLY Pro-Line). If the error remains, check the wiring or replace the sensor.
- 🔥 Code 43 (misfire): Start with the spark plugs - replace them with new ones (NGK or Denso). If the problem persists, check the coils and high-voltage wires.
- 🛢️ Code 34 (MAP sensor): Make sure the intake manifold is sealed. Often the culprit is a cracked hose or worn gasket.
If after eliminating the cause the error does not disappear, reset it manually: disable negative battery terminal for 10-15 minutes or use a scanner to reset the codes.
Check oil and antifreeze levels
Inspect the wiring for damage
Prepare a multimeter to test the sensors
Buy spare parts (plugs, sensors) in advance-->
Errors that self-diagnosis will not show
Self-test mode via flashing check engine limited and does not cover all vehicle systems. For example, it will not display:
- 🚨 ABS errors — to read them you need a scanner connected to the connector
OBD-IIunder the steering wheel. - 💥 Airbag problems (SRS) - requires diagnostics through Consult-III.
- ⚙️ Automatic transmission malfunctions — transmission codes are read separately (for example, code
P0730indicates incorrect gear shifting). - 🔋 On-board voltage - low battery charge or faulty alternator will not be displayed as an error.
For a complete diagnosis, it is recommended to use ELM327-adapter (cost ~500–1500 rub.) and program Torque Pro (Android) or FORScan (Windows). These tools will show advanced codes, including P0xxx, Cxxxx (chassis) and Bxxxx (body).
If after self-diagnosis there are no errors, but the car behaves unstable (for example, the speed fluctuates), check bulk wires on the body and engine. Oxidized contacts can cause failures without fixing the code.
Frequently asked questions about self-diagnosis Nissan March
Owners March often encounter typical difficulties when trying to run a self-test. Let's look at the most relevant ones.
⚠️ Attention: If the indicators on the panel do not blink but stay on after turning on the diagnostic mode, this may indicate ECU malfunction or an open circuit in the diagnostic connector. Do not try to repeat the procedure more than 3 times in a row - this may lead to the system being blocked.
Question 1: Why doesn't self-diagnosis start?
Answer: Possible reasons:
- The button is faulty TRIP RESET (check its functionality).
- Problems with the ignition contact group (turn the key several times to clean the contacts).
- On some versions March K12 You must first press the brake pedal.
Question 2: Is it possible to reset errors without a scanner?
Answer: Yes, disconnecting the battery for 10-15 minutes will clear the codes. However, if the cause of the problem is not eliminated, the error will return. To reliably reset, use the command via OBD-II:
AT Z // Сброс ошибок в ELM327When self-diagnosis is useless: cases for service
Not all faults can be identified or corrected on your own. Contact the service if:
- 🚗 After the error is eliminated, it appears again within 1–2 days.
- 💻 Self-diagnosis shows code
55, but the car is unstable (for example, it stalls at idle). - ⚡ Several indicators light up on the panel simultaneously (check engine + ABS + ESP).
- 🔧 Replacement required ECU, immobilizer or automatic transmission control unit.
Cost of diagnostics in the service Nissan amounts to 1500–3000 rub., but it includes checking all systems, not just the engine. For March K13 with the system Start/Stop Additional battery and alternator diagnostics may be required.
Self-diagnosis is the first step in troubleshooting, but it is not a panacea. If the problem is serious (for example, engine knocking or oil leakage), stop using the vehicle immediately and contact a professional.
FAQ: Answers to popular questions
Is it possible to perform self-diagnosis on a Nissan March with a Start/Stop button?
Yes, but the procedure is different: instead of turning the key, press the button START without pressing the brake. Hold TRIP RESET until the indicators start flashing. On some versions it may be necessary to first press the gas pedal 3 times.
What does code 33 mean on Nissan March K12?
Code 33 indicates a malfunction manifold absolute pressure (MAP) sensor. Reasons:
- Vacuum tube clogged.
- Damage to the sensor membrane.
- Air leaks through cracks in the manifold.
It is recommended to check the system for leaks and replace the sensor if cleaning does not help.
How to reset the service interval (oil) without a scanner?
On March K13 You can reset the service interval like this:
1. Turn off the ignition.
2. Press and hold the button TRIP RESET.
3. Turn the key to position ON.
4.Hold the button 10 secondsuntil the service indicator starts flashing.
5. Release the button and turn off the ignition.
For K12 A different sequence may be required - see the instructions for the car.
Why do they appear again after resetting the errors?
This means that the cause of the malfunction has not been eliminated. For example:
- If the code 13 (temperature sensor) returns, check antifreeze condition and sensor circuit.
- If the code 43 (misfire) repeats, inspect spark plugs, coils and high-voltage wires.
In some cases, the error may be “false” due to poor contact in the ECU connectors.
Can self-diagnosis be used to check the transmission?
No, flashing mode check engine shows only errors of the engine and related systems. For diagnostics Automatic transmission or Manual transmission you need a scanner that supports protocols J1850 or CAN. For example, code P0700 indicates a malfunction in the transmission, but it cannot be read without equipment.