B2478
Anti-Theft Input Signal Short To Ground
B2478 is an OBD-II diagnostic trouble code meaning: Anti-Theft Input Signal Short To Ground. Common causes: wiring harness damage, anti-theft sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- Inability to start the engine
- Check engine light is on
- Activation of the anti-theft system
Causes
- Wiring harness damage
- Anti-theft sensor malfunction
- Short circuit in the circuit
- Problems with the engine control unit
How to Fix
- Check wiring harness for damage
- Check the anti-theft sensor
- Check circuit for short circuit
- If necessary, replace faulty components
Related codes
FAQ
What does the B2478 code mean?
B2478 is an OBD-II diagnostic trouble code that indicates: Anti-Theft Input Signal Short To Ground
What causes a B2478 error code?
The most common causes of B2478 include: Wiring harness damage; Anti-theft sensor malfunction; Short circuit in the circuit; Problems with the engine control unit.
How do I fix a B2478 diagnostic trouble code?
To fix B2478: Check wiring harness for damage. Check the anti-theft sensor. Check circuit for short circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2478?
Yes, but get it checked soon
How much does it cost to fix B2478?
The estimated repair cost for B2478 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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