With this standard, OBDII Scanner and OBDII Reader became popular tools that everyone can use to diagnose car malfunctions. It specifies the type of diagnostic connector and its pinout, the electrical signaling protocols available, and the messaging format. In 1996, a new specification, OBDII, was made mandatory for all cars sold in the United States. The codes varied by manufacturers and make, which made it difficult for mechanics to diagnose the problem. If they are P0, P2, P34-P39, B0, B3, C0, C3, U0, or U3, the issue is generic. Look at the first two characters of the OBD code. OBD system started in the early 1980s with a simple function to turn on the malfunction indicator light or “idiot light” when it detects a malfunction. These are the manufacturer-specific codes. With a code reader or scanner, you can access one or more OBD2 codes that indicate the issues. When the system identifies an issue, it turns on the check engine light and provides real-time data in addition to a standardized series of Diagnostic Trouble Codes (or DTCs). On-Board-Diagnostic (OBD) Trouble Codes are one way your vehicle reports self-diagnostic results. Generic Powertrain Trouble Codes P0000 through P0099 P0100 through P0199 P0200 through P0299 P0300 through P0399 P0400 through P0499 P0500 through P0599.
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