#Nissan data scan 2 pc manuals#
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Thus, a P0302 misfire code on a Nissan means the same thing on a Honda, Toyota, Mercedes-Benz, Chevy or Ford. The trouble codes that are required by law on all OBD II systems are 'generic' in the sense that all vehicle manufacturers use the same common code list and the same 16-pin diagnostic connector. A drive cycle means starting a cold engine and driving it long enough to reach operating temperature. With some exceptions, the OBD II warning lamp will also go out if a problem does not recur after 40 drive cycles. Whether the light goes out or remains on, a code will be set and remain in the computers memory to help you diagnose the fault. Don't think the car has healed itself because the intermittent problem may still be there waiting to trigger the light once again when conditions are right. If the light is on because of a misfire or a fuel delivery problem, and the problem does not recur after three drive cycles (under the same driving conditions), the Check Engine light may go out. A separate warning light will illuminate if there are other non-emissions problems such as low oil pressure, charging system problems, etc. Remember, the Check Engine light only comes on for emissions-related failures (which includes fuel and ignition, too). Is it a serious problem or not? If the engine seems to be running okay, you might just ignore the light.

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The 'Malfunction Indicator Lamp' (MIL), which may be labeled 'Check Engine' or 'Service Engine Soon' or an ISO symbol of an engine with the word 'Check' in the middle, alerts the driver when an emissions problem occurs.Р”Вepending on how the system is configured and the nature of the problem, the lamp may come on and go off, remain on continuously or flash - all of which can be very confusing because you have no way of knowing what the light means. So as long as emissions remain under the legal limit, the Check Engine Light usually remains off. In many instances, emissions can be held in check, despite a faulty sensor, by adjusting fuel trim, which the engine computer does automatically. The determining factor as to whether or not the Check Engine light comes on is usually the effect on emissions. Consequently, the Check Engine Light on an OBD II-equipped vehicle may come on when there is no apparent drivability problem, or it may not come on even though a vehicle is experiencing a noticeable drivability problem. It also will set codes if there is a gross sensor failure, but some types of sensor problems will not always trigger a code. OBD II is primarily emissions-driven and will set codes anytime vehicle emissions exceed the federal limit by 1.5 times. Unlike earlier OBD systems that only set a diagnostic trouble code (DTC) when a sensor circuit experienced a gross failure such as a short, open or over voltage, OBD II sets codes if a fault has the potential of causing emissions to rise. Some of these early systems are not fully OBD II compliant, meaning they may not set codes or turn on the Check Engine light for misfires, catalytic converter problems or fuel vapor leaks. In 1995, more models were added including the Nissan Maxima and 240SX.

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OBD II is a very powerful diagnostic system that can give technicians a greater insight into what is actually happening within the engine control system.Р”В®arly OBD II systems first began to appear on a few 1994 models, including the Lexus ES300, Toyota Camry 1MZ-FE 3.0L V6 and T100 pickup 3RZ-FE 2.7L four, plus a number of Audi, Mercedes-Benz, Volkswagen and Volvo models. OBD II has been required on all new passenger cars and light trucks sold in the United States since model year 1996, including all imports. Consequently, emissions test failures have gone up with OBD II testing.

OBD II will detect emissions problems that might not cause a vehicle to fail a tailpipe test.

#Nissan data scan 2 pc simulator#

OBD II plug-in testing is faster, easier, cheaper and more accurate than a tailpipe road simulator type of emissions test. OBD II Engine Diagnostics Copyright Adapted from an article written by Larry Carley for Import Car magazineР”Р„re you up to speed on OBD II diagnostics? You should be because most states now use a simple OBD plug-in test to check emissions compliance rather than a tailpipe dyno test.

#Nissan data scan 2 pc manuals#

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