OBD Guide
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B1013

Diagnosis Sensor Unit

B1013 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: wiring harness damage, short circuit in the circuit. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • SRS system does not respond to testing
  • Lack of response from airbags in an accident

Causes

  • Wiring harness damage
  • Short circuit in the circuit
  • Contact corrosion
  • Malfunction of the sensor diagnostic unit
  • Unit power problems

How to Fix

  1. Check wiring harness for damage
  2. Inspect contacts for corrosion
  3. Check the power supply to the diagnostic unit
  4. Scan the system for additional errors
  5. If necessary, replace the diagnostic unit

Related codes

B1011B1012B1014

FAQ

What does the B1013 code mean?

B1013 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit

What causes a B1013 error code?

The most common causes of B1013 include: Wiring harness damage; Short circuit in the circuit; Contact corrosion; Malfunction of the sensor diagnostic unit.

How do I fix a B1013 diagnostic trouble code?

To fix B1013: Check wiring harness for damage. Inspect contacts for corrosion. Check the power supply to the diagnostic unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1013?

Limited driving only, diagnose soon

How much does it cost to fix B1013?

The estimated repair cost for B1013 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat