Dlc Connector Pins Needed to Read Code
Guide to OBD codes and how to read them
How to read and interpret OBD diagnostic codes
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Agreement OBD codes is a vital aspect of vehicle maintenance as part of a stiff fleet tracking and management strategy.
When the Cheque Engine calorie-free pops on, information technology can point a wide range of issues with your vehicle. Symptoms of the problem may non be apparent, and a uncomplicated lite on its own tin't tell you whether the issue lies with the fuel system, ignition, manual, computer circuitry, emission controls, or elsewhere.
Modern vehicles have onboard diagnostic computers (OBDs) that enable a mechanic with the right tools to apace understand any problem that the vehicle is experiencing. When something goes wrong, the OBD computer stores a five-letter diagnostic trouble code (DTC) that summarizes the issue at manus. These are also unremarkably known as OBD codes or OBD-2 codes.
Through the use of an OBD scanner, you lot can get this v-letter code from the vehicle so you know exactly what needs attention.
- Our guide to the best GPS fleet tracking solutions
- How does fleet direction work?
- The best fleet management software and services
How to read OBD codes: Training
Reading OBD codes requires an OBD scanner, which can toll betwixt $30 and $60. It's a handheld tool with a 16-pivot trapezoidal connector that plugs into the vehicle and interprets the OBD code. You don't need any other tools, just access to the interior of the vehicle.
Step 1: Plug the OBD scanner into the OBD port
Your OBD scanner has a 16-pin trapezoidal connector that fits into the vehicle'due south OBD port. This is also known as the diagnostic link connector (DLC). Each vehicle has a different location for the OBD port, but most of the fourth dimension, you'll find it nether the driver's side dashboard near the pedals. In rare cases, it will be in the center dashboard or beneath the glove compartment. Check your owner's manual for the precise location of your DLC.
Step 2: Turn on the ignition
Turn on the ignition in the vehicle, simply don't start the engine. Turning on the ignition will send power to the OBD scanner, which will begin communicating with the vehicle's on-lath computer. Yous'll see a message like "establishing link with OBD" while the scanner is initiating.
If the scanner doesn't light up when you lot switch on the ignition, bank check the connexion between the scanner and the connector pins. If information technology'southward still non working, check whether there is power coming through the auto's auxiliary power outlet (aka the cigarette lighter). The OBD system gets its power from the aforementioned circuit, so if there'due south no voltage going to the power outlet, then the OBD scanner won't work either.
Step 3: Enter the Vehicle Identification Number
With some OBD scanners, you'll take to enter the Vehicle Identification Number (VIN), brand, model, and engine blazon of the vehicle. This is because some OBD codes are manufacturer-specific, so the scanner will be able to requite you more accurate information if you enter more details about your specific vehicle.
Side by side, navigate to the Codes carte du jour on your OBD scanner. Each scanner is different, merely typically, it will be chosen Codes or Trouble Codes.
In many cases, you lot'll also be asked to choose between Active Codes and Pending Codes. Active Codes refer to malfunctions that are causing your Check Engine light to stay on. Pending Codes are errors that have occurred at least once simply haven't nonetheless caused the Bank check Engine light to trip. If the type of mistake happens over again, though, the Awaiting Lawmaking volition exist updated to an Active Code, and the Check Engine low-cal will turn on.
Step 5: Interpret the first character of the OBD code
Now you have the OBD code, yous need to exist able to interpret what it ways. Each grapheme of the code tells yous something about the error. The outset one gives you an overview of the outcome at hand.
If the outset character is a P, there'south a problem with the powertrain system. If information technology'south a B, there'south something wrong in the body arrangement, which could indicate an result with the airbags, for example. If the beginning graphic symbol is a C, in that location's a trouble in the chassis, such every bit an effect with the anti-lock brakes. If information technology'southward a U, the network advice system has an issue.
Stride 6: Interpret the second character of the OBD code
The second character in the code defines whether the problem is a generic event or a manufacturer-specific issue. When creating the OBD code organization, the Society of Automotive Engineers chose standard codes for problems that can occur on about cars. These are known every bit generic codes. Some manufacturers take added their own codes considering their parts aren't accurately reflected in the generic list. These are the manufacturer-specific codes.
Wait at the first two characters of the OBD lawmaking. If they are P0, P2, P34-P39, B0, B3, C0, C3, U0, or U3, the issue is generic. If they are P1, P30-P33, B1, B2, C1, C2, U1, or U2, the problem is manufacturer specific.
Most of the time, the effect volition be P0 or P1, which specifies that there's a problem somewhere in the powertrain system.
Step vii: Translate the 3rd character of the OBD code
The third character gives us even more than specific data on where the trouble lies. Each type of consequence (powertrain, trunk, chassis, network communication organisation, etc.) has its own interpretation for this number.
In the case of powertrain issues, a one indicates a fuel or air metering system trouble, a 2 means at that place's a fuel or air metering injection organisation effect, a 3 indicates a problem with the ignition arrangement, a 4 is an emissions systems error, a v is a speed control or idle control issue, a 6 is a computer/electronics problem, and a seven-9 indicates that something'southward wrong with the transmission.
Step 8: Interpret the terminal characters of the OBD lawmaking
The final two characters of the OBD code specify the exact fault. With thousands of potential faults, to get the verbal details of the issue, you'll demand to get online and utilise i of the many OBD Code estimation websites, such as OBD-Codes.com. Enter the full OBD code, and the website volition render full details on the mistake experienced and how to fix information technology.
Summary
Modern vehicles make diagnosing vehicle trouble easier through the employ of OBD codes. Y'all can use an OBD scanner to find out why your Cheque Engine light is on. The five-character code details the vehicular organization that's experiencing a problem, and you tin even interpret the code yourself past examining its characters.
Still, there are so many possible OBD codes, information technology's usually easier to enter the OBD code returned past your scanner into an OBD Lawmaking interpretation website to notice out what that specific code means.
Further reading
- Our guide to the all-time GPS fleet tracking solutions
- How does armada management piece of work?
- The best fleet management software and services
Richard brings over 20 years of website development, SEO, and marketing to the table. A graduate in Computer Science, Richard has lectured in Java programming and has built software for companies including Samsung and ASDA. Now, he writes for TechRadar, Tom's Guide, PC Gamer, and Creative Bloq.
Dlc Connector Pins Needed to Read Code
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