B2495 Anti-Theft Horn Output Circuit Fault
The B2495 code indicates a fault in the anti-theft horn output circuit, specific to Ford vehicles. This code is set when the Passive Anti-Theft System (PATS) module detects an anomaly in the circuit that activates the alarm horn, such as a short circuit, open circuit, or abnormal resistance in the control line to the alarm horn. The module monitors the circuit status and logs the code when the output signal does not match the expected response.
1. Commonly Affected Makes
2. Most Common Causes
- Damaged or burned-out anti-theft alarm horn
- Open circuit, short circuit, or excessive resistance in the horn output wiring
- Corroded or loose connector at the anti-theft horn module
- Faulty PATS control module
- Blown fuse for the anti-theft horn circuit
- Defective anti-theft horn control relay
3. Symptoms You Will Notice
- The anti-theft alarm horn does not sound when triggered
- The alarm system may not arm or disarm properly
4. Step-by-Step Diagnosis
Check the anti-theft horn fuse and replace if blown
Inspect the anti-theft horn and its wiring for damage, corrosion, or loose connections
Test the anti-theft horn relay for proper operation
Verify continuity and resistance in the horn output circuit from the PATS module to the horn
If all else is good, test or replace the PATS module
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive, but the anti-theft alarm horn will not function, which may reduce vehicle security.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the issue is a simple fuse replacement or a faulty PATS module.