B1009
Diagnosis Sensor Unit
B1009 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: malfunction of the srs diagnostic unit, damage to the srs wiring harness. Estimated repair cost: $56–167.
Symptoms
- The SRS indicator on the dashboard is on
- Disabling some restraint system features
- Errors in other SRS systems
Causes
- Malfunction of the SRS diagnostic unit
- Damage to the SRS wiring harness
- Short circuit or open circuit
- Problems with the power supply of the diagnostic unit
How to Fix
- Diagnose the SRS system using a scanner
- Check the integrity of the wiring harness and connections
- Check the power and ground of the diagnostic unit
- If necessary, replace the SRS diagnostic unit
- Reset errors and check system operation
Related codes
FAQ
What does the B1009 code mean?
B1009 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit
What causes a B1009 error code?
The most common causes of B1009 include: Malfunction of the SRS diagnostic unit; Damage to the SRS wiring harness; Short circuit or open circuit; Problems with the power supply of the diagnostic unit.
How do I fix a B1009 diagnostic trouble code?
To fix B1009: Diagnose the SRS system using a scanner. Check the integrity of the wiring harness and connections. Check the power and ground of the diagnostic unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1009?
Do not drive — repair immediately
How much does it cost to fix B1009?
The estimated repair cost for B1009 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat