OBD Guide
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B2440

Passenger Side Side Crash Sensor Mount Fault

B2440 is an OBD-II diagnostic trouble code meaning: Passenger Side Side Crash Sensor Mount Fault. Common causes: damage to the sensor mount, contact corrosion. Estimated repair cost: $56–167.

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

Symptoms

  • The passive safety system fault indicator is on
  • Restraint system disabled
  • Lack of sensor response during diagnostics

Causes

  • Damage to the sensor mount
  • Contact corrosion
  • Open or shorted wiring harness
  • Malfunction of the sensor itself
  • Problems with the restraint system control unit

How to Fix

  1. Visual inspection of the sensor and its mounting
  2. Checking the condition of contacts and wiring harness
  3. Replace the sensor if necessary
  4. Wiring harness repair or replacement
  5. Error reset and system check

Related codes

B2435B2445B2455

FAQ

What does the B2440 code mean?

B2440 is an OBD-II diagnostic trouble code that indicates: Passenger Side Side Crash Sensor Mount Fault

What causes a B2440 error code?

The most common causes of B2440 include: Damage to the sensor mount; Contact corrosion; Open or shorted wiring harness; Malfunction of the sensor itself.

How do I fix a B2440 diagnostic trouble code?

To fix B2440: Visual inspection of the sensor and its mounting. Checking the condition of contacts and wiring harness. Replace the sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2440?

Do not drive — repair immediately

How much does it cost to fix B2440?

The estimated repair cost for B2440 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat