Does this code reader tell you where exactly your problem lies when your CEL (MIL) comes on (e.g. O2 sensors)?
1581157
It depends on the car and the software you are using with this code reader, but mainly yes. As least if it did not tell you which O2 sensor is bad it will tell you that an O2 sensor is bad somewhere.
1581158
Yes it will, it will give you a code number that you can easily look up on line.
1171542
Hi good questions. This unit will only give you readings that your engine computer has and there is a lot. Also if you have a check engine light come on you can read it and reset the computer. If you get the unit you'll be glad you did. I am.
839998
Yes. It will read all engine functions and service codes as well as Temp, RPM and sensor readings
559030
Not sure. Occasionally the O2 sensor throws a code for other systems being out of spec. It's not always the sensor itself. Also on O2 sensors, get someone to clear the code. You can drive around for several cycles and it may clear on its own, if all is well. But it will take a few trips/few miles.
1938137
If you have a DVM or voltmeter you can run a continuity check on the driver, if it's an open circuit then the response from Christopher J. is, indeed, the correct one.
863507
A cheap generic scanner just reads and displays the DTC (diagnostic trouble codes) codes and lets you clear them and turn off the Check Engine light. The CP9180 also lets you read the various power train (engine) sensors such as coolant temp, engine speed, vehicle speed, timing, etc (there are literally dozens). It also monitors emissions systems status, such as whether your EGR system has passed its self-test and is properly working. All the emissions systems must be "Ready" in order to pass the state emissions tests. The CP9180 only monitors the powertrain computer. It doesn't work with the air bag, transmission, ABS, anti-theft or other body modules that may be present in your car.
1544445
it will but YOU MIGHT BE HIDING A SERIOUS PROBLEM by clearing codes....there is a reason why the engine light comes on.....but its your vehicle...so the answer is YES....THE SCAN TOOL WILL CLEAR THE CODES
1008966
Sometimes it will tell you or lead you to the problem. Sometimes your check engine lite will come on and go out, this you will need a little more knowledge of what's going on. For instants , engine does not reach operating temp. In time witch is preset in the ECM. A lot of people change the temp sensor, but a lot of time it's the thermostat that is no longer accurate.
2080498
No , It's for checking engine management only.It won't check or allow setting of anything else, wish it would !!! Hope this was helpful.
1325745
yeah, it won't recognize it. The tool lets you easily reset the learning mode of the receiver/computer by grounding the proper wire in a series of code signal. I never did get my infiniti M-35 to recognize the new tpms in all four tires (supposedly the correct ones) so...$145 later I bought a good pressure gauge and threw it in the glove box and manually check tire pressures.
1425075
You need to take your vehicle to a shop or tire store and ask them to read your sensors. If they will not read,then it is bad.
1325746
When the service department changes the sensor they will have to reprogram the computer to register it. At that point the light will go out if there are no other problem. I do not believe this tool is able to register a new sensor, it does set the internal electronics into a diagnostic mode. However, each model year is unique and whether or not the internal electronics are able to register a new sensor ID or just reset to an existing one is specific to the internal. Same thing applies when you rotate the tires.
2238969
It should tell you answer code when there is a check engine light. There are pending codes as well. It does take a couple of attempts to get the code to come up, but it works well for $20.00.
1522450
It reads all cars from 2006 and up. It will detect and sensor or engine issue and should read fuel system issues.
905972
No. You need a custom tune for that. There are ways to trick the sensor into thinking it is working.
1322179
yes, after you read and clear the codes, but you can't just clear them and go for an emissions test. I think you have to drive a little make sure they are gone.
863469
Your oem sensor under normal conditions will give you 3+ years of service. Signs of degradation are: a decrease in the amount of km per full tank of fuel; the engine with give a rough idle similar to that which is gives when then AC is turned on (this is due to an inconsistent signal returning to the ecu resulting in either a richer or leaner mixture) ; if you have a a/f Guage installed you will see the Guage give a sporadic reading. The reading will fluctuate a lot and you may even feel the vehicle feel like it's losing power. If you rpm is behaving as you describe it can also be a result of your distributor. Your oem sensor under normal conditions will give you 3+ years of service. Signs of degradation are: a decrease in the amount of km per full tank of fuel; the engine with give a rough idle similar to that which is gives when then AC is turned on (this is due to an inconsistent signal returning to the ecu resulting in either a richer or leaner mixture) ; if you have a a/f Guage installed you will see the Guage give a sporadic reading. The reading will fluctuate a lot and you may even feel the vehicle feel like it's losing power. If you rpm is behaving as you describe it can also be a result... » Read More Your oem sensor under normal conditions will give you 3+ years of service. Signs of degradation are: a decrease in the amount of km per full tank of fuel; the engine with give a rough idle similar to that which is gives when then AC is turned on (this is due to an inconsistent signal returning to the ecu resulting in either a richer or leaner mixture) ; if you have a a/f Guage installed you will see the Guage give a sporadic reading. The reading will fluctuate a lot and you may even feel the vehicle feel like it's losing power. If you rpm is behaving as you describe it can also be a result of your distributor. « Show Less