OBD Guide
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B1110

Diagnosis Sensor Unit

B1110 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: malfunction of the sensor diagnostic unit, damage to the srs wiring harness. Estimated repair cost: $111–333.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$111–333 (est.)

Symptoms

  • The SRS indicator on the dashboard is on
  • Disabling airbags and pretensioners
  • Errors in other passive safety systems

Causes

  • Malfunction of the sensor diagnostic unit
  • Damage to the SRS wiring harness
  • Short circuit or open circuit in the sensor circuit
  • Problems with the power supply of the diagnostic unit

How to Fix

  1. Check the SRS wiring harness for damage.
  2. Check the power and ground of the diagnostic unit
  3. Scan the SRS system for additional errors
  4. Replace the sensor diagnostic unit if necessary

Related codes

B1100B1101B1102

FAQ

What does the B1110 code mean?

B1110 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit

What causes a B1110 error code?

The most common causes of B1110 include: Malfunction of the sensor diagnostic unit; Damage to the SRS wiring harness; Short circuit or open circuit in the sensor circuit; Problems with the power supply of the diagnostic unit.

How do I fix a B1110 diagnostic trouble code?

To fix B1110: Check the SRS wiring harness for damage.. Check the power and ground of the diagnostic unit. Scan the SRS system for additional errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1110?

Do not drive — repair immediately

How much does it cost to fix B1110?

The estimated repair cost for B1110 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat