B1027
Diagnosis Sensor Unit
B1027 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: malfunction of the sensor diagnostic unit, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Airbag light is on
- The security system does not pass self-diagnosis
- Error message on the dashboard
Causes
- Malfunction of the sensor diagnostic unit
- Open or short circuit in wiring harness
- Poor contact in connectors
- Contact corrosion
- Problems with the power supply of the diagnostic unit
How to Fix
- Check error codes using a scanner
- Inspect the wiring harness and connectors for damage.
- Check the supply voltage of the diagnostic unit
- Clean connector contacts if there is corrosion.
- If necessary, replace the sensor diagnostic unit
Related codes
FAQ
What does the B1027 code mean?
B1027 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit
What causes a B1027 error code?
The most common causes of B1027 include: Malfunction of the sensor diagnostic unit; Open or short circuit in wiring harness; Poor contact in connectors; Contact corrosion.
How do I fix a B1027 diagnostic trouble code?
To fix B1027: Check error codes using a scanner. Inspect the wiring harness and connectors for damage.. Check the supply voltage of the diagnostic unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1027?
Do not drive — repair immediately
How much does it cost to fix B1027?
The estimated repair cost for B1027 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat