OBD Guide
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B1106

Diagnosis Sensor Unit

B1106 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: damage to the srs wiring harness, poor contact in the connectors of the diagnostic unit. Estimated repair cost: $56–167.

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

Symptoms

  • SRS/airbag indicator is on
  • SRS does not activate in an accident
  • Error persists after scanning

Causes

  • Damage to the SRS wiring harness
  • Poor contact in the connectors of the diagnostic unit
  • Malfunction of the diagnostic unit itself
  • Short circuit in the sensor circuit
  • Problems with the power supply of the diagnostic unit

How to Fix

  1. Perform a visual inspection of the SRS wiring harness
  2. Check connections and contacts of the diagnostic unit
  3. Scan the SRS system for other errors
  4. If necessary, replace the diagnostic unit
  5. Reset the error and check if it returns

Related codes

B1000B1100B1101B1105

FAQ

What does the B1106 code mean?

B1106 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit

What causes a B1106 error code?

The most common causes of B1106 include: Damage to the SRS wiring harness; Poor contact in the connectors of the diagnostic unit; Malfunction of the diagnostic unit itself; Short circuit in the sensor circuit.

How do I fix a B1106 diagnostic trouble code?

To fix B1106: Perform a visual inspection of the SRS wiring harness. Check connections and contacts of the diagnostic unit. Scan the SRS system for other errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1106?

Do not drive — repair immediately

How much does it cost to fix B1106?

The estimated repair cost for B1106 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat