- Fuel Systems.
- Engine Misfires.
- Emissions Control Systems.
- Vehicle/Speed Idling Controls.
- Computer Systems.
- Transmission Systems.
- Others related to vehicle body & chassis etc such as Seat-belt, Airbags etc.
What’s the difference between OBD and OBD2?
OBD is the abbreviation for on-board diagnostics. OBD2 refers to the second generation of the onboard diagnostic system
. OBD or onboard diagnostics is the system in a car that controls and monitors all the important control devices, offering data access with the appropriate hardware and software.
Can AutoZone tell you what’s wrong with your car?
An OBD-II tool can read diagnostic trouble codes that communicate what is wrong with your car
. AutoZone uses one of these in our Fix Finder service, the check engine light is scanned to find out what part you need to fix your car.
How do I read OBD2 Scanner data?
What is the difference between an OBD reader and scanner?
A code reader is a simplified version of a scan tool, but it’s only capable of performing basic scans of trouble codes
. A scan tool can read and clear trouble codes, and it may also provide advanced data reading and playback features, knowledge bases, diagnostic procedures, and built-in testing equipment.
Do all OBD2 scanner erase codes?
In order to properly clear or erase OBDII codes, it is better to use a scanner. It really doesn’t matter if you have a wired or wireless scanner.
Any kind of scanner will do, as long as the scan tool can read, diagnose, and erase trouble codes
.
What does white smoke from the tailpipe usually indicate?
White Smoke
It usually means that
coolant is being burned in the engine
, which means that something is drastically wrong. The most common cause of this is a blown head gasket, which can quickly lead to an overheating engine.
CAN OBD scan tool codes?
TOOL 1: Hand-Held Scan Tools
You can read the codes and sometimes clear the codes with these tools, but the information is limited
. You have to record the codes and search for more information before you can do anything.
What does Black smoke from the tailpipe usually indicate?
Black Smoke
Billowing black smoke is generally a sign that the
fuel-air ratio in your engine is too rich
. This means that the fuel injectors are either adding too much fuel or that the intake valves aren’t letting enough air in.
Is OBD1 better than OBD2?
OBD1 has good diagnostic capabilities, while OBD2 has better signalling protocols and messaging formats
.
Does my car have OBD1 or OBD2?
The standard OBD2 interface is a 16-pin connector. OBD2 interfaces are the same, so
if the interface has 16-pin connector, so your car is OBD2
. If it looks different, your car is OBD1.
Will any OBD2 Scanner work on my car?
If your car or truck was manufactured in 1996 or later, an OBD2 scanner is compatible
. If the vehicle is older than 1996, an OBD1 scanner may work, but those are more specific to each model of car.
CAN OBD scanner damage car?
It’s completely safe to leave an OBD2 scanner tool plugged in while driving
. In fact, it’s important to have your car running while you diagnose an engine code to avoid damaging the scanning software. Worried about your car’s battery life?
Does OBD2 read fuel pressure?
You can actually check fuel pressure with OBD 2 scanner, which will give you readings from the fuel pressure sensor
. If you don’t have a scanner, you can listen to a buzzing sound when you try starting your car, which indicates that the fuel pump puts pressure on the system.
What should 02 sensor read on scanner?
The voltage generated from the O2 sensor should be from
0.1V to 0.9V, with 0.9V on the rich side and 0.1V on the lean side
. If your readings are within this range, the O2 sensor is functioning properly.
Does OBD port drain battery?
Battery Drain
So
a poorly designed OBD device, when left plugged into the OBD port, might completely drain your battery
. Worse still, if a device is not carefully designed, it can turn on your ECU even while the car is not running, draining your battery even faster.
What scan tools do dealerships use?
- #1 – Autel Scanner MaxiCOM MK808 OBD2 Scanner.
- #2 – LAUNCH CRP129E OBD2 Scan Tool.
- #3 – Actron CP9690 Elite OBD2 AutoScanner.
- #4 – Autel ML629 OBD2 Scanner.
- #5 – BlueDriver Bluetooth OBDII Scan Tool.
- #6 – OBDeleven Pro Diagnostic Scan Tool.
- #7 – ANCEL FX2000 Vehicle OBD2 Scanner.
How accurate are car code readers?
Entirely accurate
. These devices are not rocket science, and nor are they pocket mechanics. They simply report out the codes they extract from the car’s computers.
Will disconnecting battery reset OBD2?
Will Disconnecting Battery Reset Obd2?
It is not possible to remove OBD2 fault codes by simply disconnecting the battery
. In addition to storing trouble codes, the ECU will be able to use a capacitors to power it. It is also necessary to drain the built-in capacitors in the ECU in order to reset the codes.
Do all code readers work on all cars?
Most OBD2 scanners and car code readers do not work on all cars
. If you are looking for an OBD2 scanner or car code reader, you should check if it works with your particular make and model before buying it.
Why is my check engine light off but code still there?
The problem that triggered the code may not have happened enough times to illuminate the light. This
most likely means the issue is not critical and that the code is pending
. So if the check engine light is off, but you see an error code, use an OBD2 scanner to help identify what the problem is.
What does GREY smoke mean?
Blue/gray exhaust smoke means
there’s likely an oil leak and your engine is burning oil
. Time to have a qualified technician check things out. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls.
What does GREY smoke mean in a fire?
Grey smoke can indicate that
the fire is slowing down and running out of materials to burn
.
Why do cars smoke in the morning?
On a cold winter day or when your car is just starting up in the morning, white smoke isn’t a problem. This smoke isn’t even smoke at all, but
steam — that is, water vapor
. Overnight, condensation can collect in the exhaust which will turn into steam as your engine warms up.
What does cat mean on a code reader?
Catalyst
(CAT) Heated Catalyst. Evaporative (EVAP) System. Secondary Air System. Oxygen (O2) Sensor.
What does PD mean on OBD II?
Permanent Diagnostic Trouble Codes
(PDTCs) are very similar to regular Diagnostic Trouble Codes (DTCs). However, unlike regular DTCs, they cannot be reset by disconnecting the vehicle’s battery or cleared using an On-Board Diagnostic (OBD) scan tool.
