Nissan Teana P2127 fault code

Hello! Fault code: P2127 is the accelerator pedal position sensor 2 circuit low input.

Battery current sensor circuit short circuit 4Refrigerant pressure sensor circuit short circuit [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Fault code: P0138

Chinese definition: oxygen sensor circuit high voltage (row 1, sensor 2)English definition: o2 sensor circuit high voltage (bank 1, sensor 2).

Category: Fuel or air.

Background: The role of the oxygen sensor is to determine the oxygen content in the engine exhaust to correct the amount of fuel injected so that the engine can obtain the best air-fuel ratio. This fault code appears when the voltage of the heated oxygen sensor signal is consistently higher than volts for a set period of time.

Tian Lai P0420 is the meaning of the exhaust pipe three-way catalytic converter is faulty and damaged.

A catalytic converter (also known as a catalytic purification converter) is an exhaust gas purification device that uses the action of a catalyst to convert CO, HC and NOx in the exhaust gas into a gas that is harmless to the human body. It is generally located before the muffler of the exhaust pipe.

The electronic control unit (ECU) detected that the exchange rate of the oxygen sensor 1 2 was comparable to that of 1 1 and therefore inferred that the catalytic converter system was too inefficient. Causes of failure include exhaust leakage near the exhaust pipe or exhaust manifold, catalytic tank failure, engine coolant temperature (ECT) sensor failure, engine fire or timing lag, dirty oil, faulty oxygen sensor, fuel system pressure too high, etc.

When your car is troubleshooting, the fault needs to be cleared**. When clearing the fault, be sure to strictly follow the clear method of the fault code specified by the specific model, and pay attention to the fact that you cannot simply remove the negative pole of the battery to clear the fault.

Tian Lai P0420 is the meaning of the exhaust pipe three-way catalytic converter is faulty and damaged.

There are 3 ways to quickly resolve the P0420 fault.

The first is: replace the original three-way catalytic converter of the vehicle, remember not to change the auxiliary factory, the auxiliary factory will not be long before the lights will be on.

The second is to install a part like this part of the TDTAS faulty lamp to repair the data to remove the P0420 faulty lamp.

The third way is: use the car computer to enter the engine ECU background and turn off this P0420 fault (some cars can, some cars can't).

Of course, there are many other ways to solve it, if you want to solve it quickly, I recommend these 3, I hope it can help you.

RT cancellation. If there is less than 3-5, then 8-10 will reproduce the fault code, replace the three-way catalytic converter and run 20,000 male fault codes, and the similar experience master can solve the problem or want to know how to detour, thank you.

P0420 Fault Code Meaning.

Summary. Dear, your three-way catalytic converter has failed, and the solutions are as follows: 1. Cleaning:

The vehicle will have the exhaust gas after combustion to block the three-way catalysis, and the impurities will be blocked too much, which will lead to the reduction of the three-way catalytic conversion ability, and the cleaning will return to normal after cleaning the blockage; 2. Replacement: After cleaning, if it cannot be used normally, it can only be replaced. The three-way catalytic converter refers to the catalytic converter that converts harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction.

Hello <>

The Nissan Ethereal fault code P0420 indicates a faulty three-way catalytic converter in the exhaust pipe. The catalytic converter is an exhaust gas purification device that uses the action of a catalyst to convert CO, HC and NOx in the exhaust gas into a gas that is harmless to the old human body. It sits before the muffler of the curved exhaust pipe.

Extended information: Teana is a mid-to-high-end luxury sedan owned by Nissan. In terms of interior, the new Teana and the new generation of Altima are basically the same, and the Teana is a car that controls tire noise and sleepiness well, and there will be no big noise into the car even if you walk on gravel roads.

The material slippage is also worthy of praise, the soft materials are used in the places that are often touched by the hands in the car, and the odor in the car is also well controlled. <>

Dear, you belong to the three-way catalytic converter failure, the solution is as follows: 1. Late cong cleaning: the vehicle will have the exhaust gas after combustion blocked on the three-way catalytic, and the impurities will be blocked more will lead to a decrease in the three-way catalytic conversion capacity. 2. Replacement:

After cleaning, if it cannot be used normally, it can only be replaced. The three-way catalytic converter refers to the catalytic converter that converts harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, denier, water and nitrogen through oxidation and reduction.

Previously replaced the spark plug, air flow meter.

At first, it was reported that the air flow meter was faulty.

The air flowmeter is broken, and the fault detection phenomenon is that the engine is destroyed and the idle speed is unstable. Weak driving and hei smoke. The speed of the refueling is reduced and the fuel consumption is increased. Rapid backfire.

When the car is next to the motor air flow meter, the car will mainly have the following fault phenomena: 1. Unstable operation; 2. Power drop; 3. Poor acceleration; 4. Failure phenomena such as increased fuel consumption.

1) The heat load of the engine is too large, so that the temperature of the whole machine is too high, the best thermal state of the engine is to keep the cooling water temperature between 75 -85, if the engine heat load is very large, or its cooling effect is not good, the engine temperature will be too high, the piston expansion thermal deformation is too large girder is missing; The gap between the cylinder liner and the piston is too small, and it is difficult to form a good lubricating oil film during the period, and even, because the lubricating oil is carbonized or burned off at high temperature, the piston ring is bonded to the cylinder wall, causing sudden explosion and premature ignition, resulting in a dry friction state and aggravating engine wear.

2) The accuracy and finish of the inner surface of the cylinder liner and the shape (taper and ovality) of the cylinder liner exceed the specified standards. The sealing effect of the piston ring is reduced, and the combustion gas in the cylinder escapes into the piston skirt, which makes the skirt temperature too high, the lubrication situation deteriorates, and the local dry friction phenomenon occurs.

3) The piston is offset by the installation position in the cylinder liner and produces eccentric wear, due to the piston deformation, the piston pin hole offset, the cylinder honing deviation, the connecting rod is bent or twisted, the crankshaft is changed to the shaft, and the crank pin is not parallel to the main journal and other reasons, which will make the piston unilaterally deviate in the cylinder. At this time, the pressure of the piston ring on the cylinder wall is relatively concentrated on the local surface, so that the oil film between the cylinder liner and the piston ring becomes thin and even rupture under great pressure, and as a result, the lubrication effect is lost, and the dry friction is formed and the temperature increases sharply.

4) Engine deflagration, when the engine is working, the fuel octane number is too low, the ignition oak argument time is too early, the compression ratio is too high, the spark plug is overheated, and the carbon deposition in the combustion chamber is serious, which will cause deflagration. As a result, the local temperature of the cylinder wall increases rapidly, so that the lubricating oil film is destroyed or cohesed into a viscose break, and the piston ring is stuck in the ring groove, causing air leakage.