B270A
Rear Sonar Sensor Right Inner
B270A is an OBD-II diagnostic trouble code meaning: Rear Sonar Sensor Right Inner. Common causes: mechanical damage to the sensor, oxidation of sensor contacts. Estimated repair cost: $56–167.
Symptoms
- Parking sensors do not respond to obstacles on the right
- False alarms of the parking system
- Constant beep when reverse gear is engaged
- Parking system error message on dashboard
Causes
- Mechanical damage to the sensor
- Oxidation of sensor contacts
- Open or shorted wiring harness
- Malfunction of the parking sensor control unit
- Contamination of the sensor surface
How to Fix
- Visually inspect the sensor for damage
- Cleaning the sensor surface from dirt
- Checking the integrity of the wiring harness
- Sensor resistance diagnostics
- Replacing a faulty sensor if necessary
- Resetting an error with an OBD-II scanner after repair
Related codes
FAQ
What does the B270A code mean?
B270A is an OBD-II diagnostic trouble code that indicates: Rear Sonar Sensor Right Inner
What causes a B270A error code?
The most common causes of B270A include: Mechanical damage to the sensor; Oxidation of sensor contacts; Open or shorted wiring harness; Malfunction of the parking sensor control unit.
How do I fix a B270A diagnostic trouble code?
To fix B270A: Visually inspect the sensor for damage. Cleaning the sensor surface from dirt. Checking the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B270A?
Limited driving only, diagnose soon
How much does it cost to fix B270A?
The estimated repair cost for B270A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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