P0513
- Powertrain
- Generic (SAE)
Not urgent
Unlikely to affect driveability. Worth resolving so the light does not mask a future fault.
Incorrect Immobilizer Key
This code is in our catalogue but has not yet been through editorial review, so the guidance below is limited to what our structured data supports. We publish deeper diagnostic content only after a code has been reviewed — here is why.
The immobiliser system has detected a key that is not authorised for this vehicle. Engine start is blocked. Possible causes are an unprogrammed replacement key, a transponder fault, or a deliberate attempt to start with the wrong key.
A trouble code records what a control module measured. It does not identify which part failed. Test before replacing anything.
- Safe to drive
- Unlikely to affect driveability. Worth resolving so the light does not mask a future fault.
- Urgency
- Not urgent
- Will it pass emissions
- Not affected
- Check engine light
- Varies
| # | Cause | How often | Component |
|---|---|---|---|
| 1 | Replacement key not programmed | Very common | — |
| 2 | Key transponder defective | Common | — |
Ordering reflects how often each cause is responsible in general, not a probability for your vehicle. Confirm by testing.
- Immobilizer
- Key Transponder
- Definition
- Generic code set (SAE J2012 / ISO 15031-6) via the OBDexopen database, dedicated to the public domain under CC0-1.0.
- Diagnostic guidance
- Written and reviewed in-house. See our editorial policy.
- Review status
- Awaiting review
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