B1138
Diagnosis Sensor Unit
B1138 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: damage to the srs wiring harness, corrosion of contacts in the diagnostic unit. Estimated repair cost: $56–167.
Symptoms
- The SRS indicator on the dashboard is on
- The passive safety system may not work in an accident.
- The error persists after being reset by the scanner
Causes
- Damage to the SRS wiring harness
- Corrosion of contacts in the diagnostic unit
- Internal diagnostic unit fault
- Problems with power or grounding of the unit
How to Fix
- Check the SRS wiring harness for damage.
- Inspect the contacts of the diagnostic unit for corrosion
- Check power supply and grounding of the unit
- Replace the diagnostic unit if necessary
- Reset the error and check the system
Related codes
FAQ
What does the B1138 code mean?
B1138 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit
What causes a B1138 error code?
The most common causes of B1138 include: Damage to the SRS wiring harness; Corrosion of contacts in the diagnostic unit; Internal diagnostic unit fault; Problems with power or grounding of the unit.
How do I fix a B1138 diagnostic trouble code?
To fix B1138: Check the SRS wiring harness for damage.. Inspect the contacts of the diagnostic unit for corrosion. Check power supply and grounding of the unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1138?
Do not drive — repair immediately
How much does it cost to fix B1138?
The estimated repair cost for B1138 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat