P0513 on Honda: How to Diagnose & Fix
Incorrect Immobilizer Key
1 Honda model · 1 documented issue · 1 critical · $180-$900 repair
P0513 on Honda by model: symptoms, diagnosis and fix
A recurring electrical issue involves faulty ignition switch operation and immobilizer-related stalling or no-start conditions. Complaints describe the green key light flashing, the engine shutting off while driving, intermittent no-starts, and dash/instrument power behaving erratically until the switch or related electronics are repaired.
Common Symptoms
- Engine shuts off while driving
- Green key light flashing on the dash
- Intermittent no-start condition
- Instrument panel lights dim or fail intermittently
- Vehicle restarts after cycling the key
How to Fix
Diagnosis should include testing the ignition switch electrical contacts, checking for voltage drop to the PCM and dash circuits, and scanning the immobilizer system. Common repairs include replacing the ignition switch, lock cylinder components, or immobilizer/antenna ring, and in some cases reprogramming keys or replacing the ignition interlock hardware. Typical repair cost ranges from about $180 for a switch replacement to $900 if lock cylinder and immobilizer programming are also needed.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Honda 35130-S84-A01 electrical ignition switchOEMHonda 35130-S84-A01
Replace the electrical portion after voltage-drop/key-position testing proves it faulty and no free recall remedy remains Fitment/availability: 2000 Honda Accord L4 or V6 in the seller's listed US configurations. Electrical steering/igni…
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Sources for this issue (1)
P0513 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0513 mean on a Honda?
P0513 stands for "Incorrect Immobilizer Key." The vehicle's immobilizer/anti-theft system did not receive a valid transponder key code, so the PCM/immobilizer treats the key as incorrect or unrecognized and may prevent starting. This is a security-system correlation fault. On Honda it is documented across 1 model: Accord.
What are the most common causes of P0513?
The most common causes of P0513 are: Unprogrammed or incorrect key/transponder, Faulty transponder chip in the key, Damaged immobilizer antenna ring around the ignition, Immobilizer or PCM communication fault, Weak key fob battery (on some systems). The specific cause varies by vehicle.
How much does it cost to fix P0513 on a Honda?
Published repair estimates on Honda range from $180 to $900 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0513 on a different make?
View P0513 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.