2003 nissan xterra mass airflow sensor symptoms

2003 NISSAN XTERRA MASS AIRFLOW SENSOR SYMPTOMS UPDATE
2003 NISSAN XTERRA MASS AIRFLOW SENSOR SYMPTOMS CODE

The freeze frame is a snapshot of the engine parameters at the moment when the fault was detected.

Checking the freeze frame may help, as it may contain some important information. If there are other trouble codes present, they might need to be looked at first.

2003 NISSAN XTERRA MASS AIRFLOW SENSOR SYMPTOMS CODE

In some cars, the code P0100 can cause the fail-safe mode where the engine speed would be limited to 2,500 - 3,000 rpm. A car with the code P0100 may have some driveability issues, such as stalling, lack of power, surging, hesitation, etc. For example, the mass air flow sensor signal could be higher than expected when the engine is not running or lower than expected with the engine running. If the signal from the mass air flow sensor is out of expected range, the ECM detects a fault and sets the code P0100. The engine computer (ECM) uses the mass air flow signal to know the engine load and to calculate the proper amount of fuel injected. The air flow sensor signal is monitored by the engine computer (ECM). The MAF sensor converts the air flow measurement into a voltage or frequency signal, with the voltage or frequency changing proportionally to the amount of air flow. The MAF sensor measures the amount of intake air flow. The mass air flow or MAF sensor is placed in the intake air duct between the air filter and the engine intake manifold. P0102 - Mass Air Flow Sensor Circuit Malfunction the code is generated when An excessively high voltage from the sensor is sent to Engine Control Module (ECM).Ģ003 NISSAN Altima Sedan OBDII Codes List.possible symptoms Engine Light ON (or Service Engine Soon Warning Light).If the code comes back, it may be necessary to replaced the mass air flow sensor. Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner.Mass air flow sensor circuit poor electrical connection Mass air flow sensor harness is open or shorted this could be the 1 you may have below, please read it. there are few o2 sensors, are they next to the Exhaust next to the converter? MASS AIR FLOW -MAF use this, for now i am guessing, until i see the correct codes your are getting. Ok lets start with the codes they say your getting. I will wait for it to go before I fix that. Dealer also stated that Distributor bearing appears to be noisy and will need to be replaced sooner or later. Seems to work fine now but I will wait and see. Parts $33.00, Labor: $300 (about 3 hrs worth of work). Dealer replaced the 'Crank Position Sensor' today. Had to have it towed to the dealer as there was no way the engine could keep up with traffic. Instead, 'Service Engine Soon' light came on. Bought water remover from the store and added to gas tank.

At one point it did not even have enough HP to move. In my case, it ran fine for a while and then suddenly the engine starts to stumble and lose output. I had a problem on my Nissan Xterra 2000. have replaced ignition wires and distributor, checked mass air flow sensor and OK. SOURCE: 000 NISSAN Xterra - after warming up, loses RPM by 500-1000.

2003 NISSAN XTERRA MASS AIRFLOW SENSOR SYMPTOMS UPDATE

The PCM doesn't even see the O2 sensor until engine temp has reached operating temp,the vehicle goes from open loop when cold,to closed loop when warm,where the PCM uses the O2 sensor to measure the rich/lean of the exhaust content,and from that,adjust fuel richness to achieve 14.7 to 1 air/fuel ratio.So when cold,the O2 sensor is out of the picture anyways.When unplugging sensors,it can be deceitful.The PCM has a program whereas,if a critical sensor (such as the mass air flow) is somehow damaged and out of the picture,the PCM will substitue a generic value that will allow the engine to stay running.So,by unplugging the MAF,it did try to run on it's own better than plugged in,there's the problem area.The vehicle is running better with the MAF unplugged,because the MAF is likely bad,and the PCM is substituting it's generic value when it IS unplugged.Something to recheckThe PROM update is a newer program for the PCM,and likely won't fix it unless the PCM is bad.I would try a good used PCM as a last or later resort,because i have seen my fair share of defective PCM's too.I have taken some PCM's apart,and found capacitors that had gone bad and leaked all over the circuit board,mostly Honda and Mitsubishi and Chrysler though.Good luck,keep me posted.

2003 nissan xterra mass airflow sensor symptoms