OBD Guide
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B2273

Ignition 2 Monitor Malfunction

B2273 is an OBD-II diagnostic trouble code meaning: Ignition 2 Monitor Malfunction. Common causes: open or short circuit in the squib circuit, damage to the security system wiring harness. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • Security system fault message on instrument panel
  • Disabling the restraint system

Causes

  • Open or short circuit in the squib circuit
  • Damage to the security system wiring harness
  • Contact corrosion
  • Safety control module malfunction
  • Problems with belt pretensioners

How to Fix

  1. Check security trouble codes
  2. Inspect the wiring harness and contacts for damage
  3. Measure the resistance of the squibs
  4. Check the operation of the belt pretensioners
  5. Replace damaged components if necessary
  6. Reset the error and check the system

Related codes

B2272B2274B1000

FAQ

What does the B2273 code mean?

B2273 is an OBD-II diagnostic trouble code that indicates: Ignition 2 Monitor Malfunction

What causes a B2273 error code?

The most common causes of B2273 include: Open or short circuit in the squib circuit; Damage to the security system wiring harness; Contact corrosion; Safety control module malfunction.

How do I fix a B2273 diagnostic trouble code?

To fix B2273: Check security trouble codes. Inspect the wiring harness and contacts for damage. Measure the resistance of the squibs. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2273?

Do not drive — repair immediately

How much does it cost to fix B2273?

The estimated repair cost for B2273 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat