Editing On-board diagnostics (section)

====EOBD fault codes====

Each of the EOBD fault codes consists of five characters: a letter, followed by four numbers.<ref>{{Cite web |title=Blog {{!}} Indramat USA |url=https://indramat-usa.com/blog/rexroth-fault-codes |access-date=2023-10-27 |website=indramat-usa.com}}</ref> The letter refers to the system being interrogated e.g. Pxxxx would refer to the powertrain system. The next character would be a 0 if complies to the EOBD standard. So it should look like P0xxx.

The next character would refer to the sub system.
*P00xx – Fuel and Air Metering and Auxiliary Emission Controls.
*P01xx – Fuel and Air Metering.
*P02xx – Fuel and Air Metering (Injector Circuit).
*P03xx – Ignition System or Misfire.
*P04xx – Auxiliary Emissions Controls.
*P05xx – Vehicle Speed Controls and Idle Control System.
*P06xx – Computer Output Circuit.
*P07xx – Transmission.
*P08xx – Transmission.

The following two characters would refer to the individual fault within each subsystem.<ref>{{Cite web|url=http://www.obd-codes.com/trouble_codes/|title=OBD-II Check Engine Light Trouble Codes}}</ref>