OBD Guide

B3033

Security System Indicates Tamper

B3033 is an OBD-II diagnostic trouble code meaning: Security System Indicates Tamper. Common causes: security module malfunction, damage to the security system wiring harness. Estimated repair cost: $56–222.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Inability to start the engine
  • Alarm indicator flashing
  • Alarm going off for no reason
  • Key fob functions do not work

Causes

  • Security module malfunction
  • Damage to the security system wiring harness
  • Faulty key fob
  • Low key fob battery
  • Security software glitch
  • Attempted hacking or tampering

How to Fix

  1. Check the key fob battery and replace if necessary
  2. Carry out diagnostics of the security module
  3. Check the integrity of the security system wiring harness
  4. Programmatically reboot the security system
  5. Replace the safety module if necessary
  6. Adapt new keys/fobs

Related codes

Error B3033 by Vehicle Brand

FAQ

What does the B3033 code mean?

B3033 is an OBD-II diagnostic trouble code that indicates: Security System Indicates Tamper

What causes a B3033 error code?

The most common causes of B3033 include: Security module malfunction; Damage to the security system wiring harness; Faulty key fob; Low key fob battery.

How do I fix a B3033 diagnostic trouble code?

To fix B3033: Check the key fob battery and replace if necessary. Carry out diagnostics of the security module. Check the integrity of the security system wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3033?

Yes, but get it checked soon

How much does it cost to fix B3033?

The estimated repair cost for B3033 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat