OBD Guide
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B1107

Diagnosis Sensor Unit

B1107 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: wiring harness damage, oxidation of contacts. 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
  • The passive safety system does not pass self-diagnosis
  • Lack of system response in case of an accident (in rare cases)

Causes

  • Wiring harness damage
  • Oxidation of contacts
  • Internal diagnostic unit fault
  • Unit power problems

How to Fix

  1. Check the integrity of the wiring harness
  2. Clean connector contacts
  3. Check the power and ground of the diagnostic unit
  4. Replace the diagnostic unit if necessary
  5. Reset the error and check the system

Related codes

B1000B1100B1105B1106

FAQ

What does the B1107 code mean?

B1107 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit

What causes a B1107 error code?

The most common causes of B1107 include: Wiring harness damage; Oxidation of contacts; Internal diagnostic unit fault; Unit power problems.

How do I fix a B1107 diagnostic trouble code?

To fix B1107: Check the integrity of the wiring harness. Clean connector contacts. Check the power and ground of the diagnostic unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1107?

Do not drive — repair immediately

How much does it cost to fix B1107?

The estimated repair cost for B1107 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat