OBD Guide
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B1047

Diagnosis Sensor Unit

B1047 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: sensor unit malfunction, wiring harness damage. 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 activate
  • Errors in other related systems

Causes

  • Sensor unit malfunction
  • Wiring harness damage
  • Poor contact in connectors
  • Short circuit or open circuit

How to Fix

  1. Check error codes using an OBD-II scanner
  2. Inspect the wiring harness and connectors for damage.
  3. Check the power supply and ground of the sensor unit
  4. If necessary, replace the sensor unit

Related codes

B1000B1010B1020

FAQ

What does the B1047 code mean?

B1047 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit

What causes a B1047 error code?

The most common causes of B1047 include: Sensor unit malfunction; Wiring harness damage; Poor contact in connectors; Short circuit or open circuit.

How do I fix a B1047 diagnostic trouble code?

To fix B1047: Check error codes using an OBD-II scanner. Inspect the wiring harness and connectors for damage.. Check the power supply and ground of the sensor unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1047?

Do not drive — repair immediately

How much does it cost to fix B1047?

The estimated repair cost for B1047 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat