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11

There is a place where this reader can be useful. Know the age of the car, and your state regulations, to find out how many 'Not Ready' monitors are allowed before the car will fail emissions. If there is an Engine light turned on on the dashboard, you won't pass emissions - so walk away. If the seller says "It's an easy fix", ask them why they didn't do ...


5

Not a good idea - leave the OBD connectors for OBD. Instead, a simpler solution is to look for an add-a-circuit device in your local car spares store. Plug it into a known 12V supply in the cars cabin fusebox, and run the power lead to the dashcam. This is a much quicker solution than trying to find switched 12V in the OBD connector, and is completely ...


4

If you plan to take the car to a professional mechanic for an inspection having your own reader is unlikely to be that much use, although it's not a complete waste of time. It may help determine whether a car is worth the effort and expense of taking it to a professional mechanic. If you plug it in and get a load of codes you may want to think about walking ...


4

It's going to be of limited value - which isn't to say none. Given most codes that are serious enough to really be of concern (and quite a few that aren't) are going to cause the Check Engine Light or similar to come on in anyway you're unlikely to reveal something completely unknown. Depending on the vehicle and the software you're using you might see ...


4

Technically no. "Codes" are errors that are set when a problem is detected, typically affecting emissions. "incomplete monitors" are tests that have not fully run to verify the validity of certain systems - perhaps HO2S, EVAP, catalyst, etc. An incomplete monitor is not saying there's a problem; it's just indicating that the ECU has not been driven ...


4

The 12v pin on the OBDII should be constant on regardless of the key position. Here is the pin out: You can test it with a multimeter to ensure it is this way in your vehicle. Whether it will work for trickle charging with a solar panel has yet to be seen, but always worth a go.


3

If the problem persists then yes it will come back on. Those type of fault codes are usually not instant tho so it may take some time to see it again. After fixing the gas cap the code may clear itself without a scanner but it usually takes a few cycles or x amount of miles driven.


3

I found its PIDS is under MODE 0x21 and PID 0x01, I hope it helps to other peoples.


3

Q1: Is there any way for me to induce the reading on these monitors without being at the mercy of an undetermined number of miles before they are available? Basically, no. Every OBDII compliant vehicle has included in their software a feature called a drive cycle. Your vehicle won't show the different emissions related things as ready until the vehicle has ...


3

In some models of the 370Z, there is a transport / storage switch in the interior fuse box. It's meant to reduce battery drain when the car is not being used by a driver. It cuts power to the obd2 among other things but not anything vital so you wouldn't notice it from daily driving. When I was checking fuses earlier, I had pulled out this switch just a ...


2

I used above formulas to create below gnuplot helper functions vol_eff = 0.8322 f_time(x) = x/1000 f_rpm_to_rps(x) = x/60 f_mbar_to_kpa(x) = x / 1000 * 100 f_celcius_to_kelvin(x) = x + 273.15 f_imap(rpm, press_mbar, temp_c) = f_rpm_to_rps(rpm) * (f_mbar_to_kpa(press_mbar) / f_celcius_to_kelvin(temp_c) / 2) f_maf(rpm, press_mbar, temp_c) = f_imap(rpm, ...


2

The ODB scanner should read the codes, as long as the ignition is turned on and has power. If you disconnect the battery or remove the fuse so that the ECU (engine control unit) loses power, it will reset and the codes will be cleared.


2

What kind of vehicle is it? Are we talking about the check engine light? Some vehicles have multiple communication channels for diagnosis. On my BMW, you have to solder two pins together to see the body modules, otherwise it's only the engine. That being said, all scan tools should be able to read and reset the code causing the Check Engine Light - it's ...


2

I wanted to followup on this one, in case anybody else gets here. Brief review: In many (all?) states within the USA, an annual emission / SMOG test is required at the time of registration renewal. In my state, they follow the guidance from the federal Environmental Protection Agency (EPA) concerning readiness during OBD II inspections. In simple words, ...


2

Yes but the module itself has to clear them, not your scan tool. If the codes where still there then there was still a fault in the system or it has not met the conditions to remove them yet.


1

Nope. It won't pass if the testing involves looking at the OBDII readiness indicators. More than likely it just hasn't completed its drive cycle. For the EVAP, your fuel has to be between 1/4 and 3/4 full ... if above or below this, it most likely will not complete. It should complete during the two week period, though, as long as there aren't any issues ...


1

The ELM 327 is just a common IC used to interface the OBD II with a PC or mobile phone. It has absolutely no clue about the data sent in either direction. That's the job of the software you use. Next, the OBD II port provides lots of information in a standardized, known protocol. That means the way to read out for example RPM, speed and error codes is the ...


1

There are common codes, then manufacturer/vehicle specific codes. The companies doing the really good obd scanners probably have most of them and they issue updates occasionally but I don’t think they give them away...


1

I would first wiggle or apply slight pressure to the connector while you are trying to connect. It could possibly just be from loose connection with the obd port. This is common on older vehicles Your lancer's year & model should be doing diagnostics through K-line (obd2 pin 7) So probably ISO 14230 or ISO 9141 protocol. Check to see if your device ...


1

I have built the device and it is working perfectly fine, there are no issues at all. I have also added a buffer with a capacitor (10000 uF) so I could switch between the car battery and external battery seamlessly with a DPDT switch, this also works very fine. From my experience it is quite safe to build a circuit like this. I didn't experience any ...


1

You want a scan tool that has live data, reads P, C, U, and B codes. If cost effective, you want it to read enhanced manufacturer specific codes. It should also have bi-directional capabilities. Finally, some of the better units tap into a pattern failure database that tells you what parts, wiring harness problems or software issues are at the root cause of ...


1

So this ended up being a blown fuse, as expected. #21 under the hood. Labeled in the owner's manual as "Back Up". 10 Amp. The shop I took it to was nice enough to include a big print out of all of the functions for each fuse, and all of the things broken were connected to this fuse. Couldn't find any detailed information on the internet for this, and it ...


1

The voltage can and does vary... you need a multimeter as a minimum. With the engine at about 2000rpm you should see somewhere between 13.7 and 14.8 (can be up to 15.3) volts depending on the type of alternator. However, if the battery is low on charge you may be around the lower end of the voltage. If you want to test the current then you need to be ...


1

None of the provided answers are specific about programming a replacement PCM to a 2000 Mazda MPV so I wanted to chime in for any future visitors needing help. There are two things that need to be matched up when changing this PCM. 1. The engine calibrations (software that runs the engine) You can usually buy the same part number computer with same software ...


1

What do motorcycles use as a communication protocol? The answer is: It depends on the manufacturer. This is not unified. And the small bikes (150cc, 250cc) generally don't have EFI (Electronic Fuel Injection) and so don't have an ECU (Engine Control Unit) at all. In theory all manufacturers can create their own protocol and use their own OBD commands and ...


1

I have a 2006 Murano (same replacement procedure as for your 2007) that threw the code P0345 Camshaft Position Sensor A Circuit Bank 2. This is the one nearer the front of the engine, on the driver's side (the other is also on the driver's side, but more toward the back/firewall). The symptom (besides the code) was that the car was hard to start. I would ...


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