B2595
Low Severity (Level 2)Anti Theft Input Signal Circuit Failure
B2595 usually means anti Theft Input Signal Circuit Failure.
Can you still drive with B2595?
⚠️Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.
Typical repair cost: $100 – $800
Severity Level 2 — Low
This code indicates a minor issue that is unlikely to cause immediate driveability problems. You can typically continue driving but should have the vehicle inspected at your earliest convenience.
Common Symptoms
- Engine cranks but won't start — immobilizer preventing start
- Security system not functioning as expected
- Alarm going off randomly or not arming
- Diagnostic trouble code (DTC) stored in module memory
Possible Causes
- Failed security module — internal fault from age, heat cycling, and vibration
- Damaged wiring or corroded connector in the anti-theft/security system circuit
- Blown fuse for the anti-theft/security system circuit — check before replacing components
- Faulty control module driving the security module
- Loose or corroded ground point shared by the anti-theft/security system
Common Fixes
- Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($19-103 at shop, free at auto parts store for basic scan)
- Visually inspect the anti-theft/security system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $84 diagnostic fee at shop)
- If the engine cranks but won't start, check the security/immobilizer light — if flashing, try a different key. Key programming may be needed ($108-575 at dealer or locksmith)
- Replace security module if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($100-800)
- Check and replace any blown fuses in the anti-theft/security system fuse circuit — if fuse blows again, there's still a short that needs to be found ($2-18 for fuses)
Estimated Repair Cost
These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.
Frequently Asked Questions
What does B2595 mean?
B2595 stands for "Anti Theft Input Signal Circuit Failure". B2595 usually means anti Theft Input Signal Circuit Failure.
Can you drive with B2595?
Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.
How much does it cost to fix B2595?
Repair costs for B2595 typically range from $100 to $800, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($19-103 at shop, free at auto parts store for basic scan); Visually inspect the anti-theft/security system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $84 diagnostic fee at shop); If the engine cranks but won't start, check the security/immobilizer light — if flashing, try a different key. Key programming may be needed ($108-575 at dealer or locksmith).
Will B2595 clear itself?
Explore Repair Costs
Related OBD-II Codes
These codes are in the same range as B2595 and often share similar causes and fixes.
Worried about repair costs?
Get transparent estimates and verify your mechanic's quote before authorizing repairs.
Related Discussions
See what other car owners are saying about this code and related repairs.
View B2595 discussions in the community