Code Definition

P0513 — Incorrect Immobiliser Key

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0513

P0513 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0513 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0513 fault code is set when the Engine Control Module (ECM) recognises that an incorrect or unrecognised key is being used to start the engine. This code is part of the vehicle's immobiliser system, a security feature designed to prevent the engine from being started without the correct key. The immobiliser system uses a transponder chip embedded in the key, which is read by an antenna or reader in the ignition switch. If the transponder chip's code does not match the code stored in the ECM, the car will either not start or will start and then stall shortly afterward. Causes for this faul...

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