The truck has the check engine light on. when i put the system in diagnostic mode the check engine flashes 2 times slow, then 3 times fast, 4 times fast, 5 times fast, and then 1 time kinda slow. the truck seems to be running fine. any ideas as to why the check engine light may be on??
i have tried the test several times and always got the same result
I have the same type of codes right after i changed my transmission in my 95 pathfinder. Did you find why you received those codes. A nissan mechanis was not really sure he told me a bad comp maybe and a bad tps.
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Re: 1995 nissan pathfinder
The check engine light may come on for several reasons. first in newer models the light is used because the fluid levels might be low. Another reason is that the ecm may have detected a fault in the sensor system because the parameters were exceeded. another reason is it could be that your fuel cap is not on tight enough. at this point it would hard for me to determine what the codes mean due to not having the manual for your vehicle. in the mean time my suggestion would be to have a full diagnostic done on the vehicle at a shop. some of those codes could be active and some might be stored and unless cleared they will remain and the light will stay on. considering your vehicle is running fine =I suspect that there not actually be a problem but the stored codes need to be reset in order for the light to go out... please rate this........thanks
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Here is a general description on retrieving codes.
You will need to check online for the actual codes and their meanings. Systems built before 1996 will not show much compared to OBD2 systems built after 1996.
Turn ignition key on.
On Pathfinder, Pickup and Van models, proceed as follows:
Turn diagnostic mode selector on ECU to ON position and wait until inspection lamps flash.
Note number of flashes, then immediately turn diagnostic mode selector to Off position.
Be advised that the MIL or CHECK ENGINE light can only perform a limited number of functions and it is a good idea to have the system checked with a scan tool to double check the circuit function.
Within a period of 5 seconds, cycle the ignition key ON - OFF - ON - OFF - ON .
Count the number of times the MIL (check engine lamp) on the instrument panel flashes on and off.
The number of flashes represents the trouble code. There is a short pause between the flashes representing the 1st and 2nd digits of the code. Longer pauses are used to separate individual 2-digit trouble codes.
An example of a flashed DTC is as follows:
Lamp flashes 4 times, pauses, then flashes 6 more times. This denotes a DTC number 46.Lamp flashes 5 times, pauses, then flashes 5 more times. This indicates a DTC number 55. DTC 55 will always be the last code to be displayed.
Pathfinders up to 1999 have the ecm under the front passenger seat. You access it from behind the seat, push the seat all the way forward. The flat head screw is on the left side of the ecm.
From 1996 on they switched to the OBD II system. So you can use a scan tool to access the codes. The connector is located at lower edge of instrument panel near steering column. NOTE: 96 - 99 ecu's have different mode states: 1. (Mode I): with engine stopped, system in bulb check state. with engine running, system in malfunction warning state. 2. (Mode II): with engine stopped, system in self diagnostic results state. with engine running, system in front O2S monitor state.
If it's like some vehicles, each set of flashes of the check engine light represents a "code". So, the code your vehicle is giving you is 12345. You may check with a dealers service department or you may even be able to Google the code and you should be able to figure out what the problem is. Normally with your check engine light, it's more than likely an emission problem such as an oxygen sensor, loose gas cap, etc.
I also have a 2005 pathfinder. I just, today, got p1757 and p1759. I am having the same problem you described. I also noticed the tempature difference. I live miami, fl. I read something about front brake valve solenoid forcing the transmission into a safe mode so there is no pick up. What did you find if anything? Any solutions? Any advice?
55 No Malfunctions -I have a dodge shadow that puts this code out just to let you know that the computer is working correctly. It is more of a self test code. If you didn't get this code, then there was something wrong with the self diagnostics.