B270B
Rear Sonar Sensor Right Inner Harness
B270B is an OBD-II diagnostic trouble code meaning: Rear Sonar Sensor Right Inner Harness. Common causes: broken wires in the harness to the sensor, wiring short circuit. Estimated repair cost: $22–89.
Symptoms
- Parking system malfunction
- False alarms of parking sensors
- Constant beep when reverse gear is engaged
- Parking system error message on display
Causes
- Broken wires in the harness to the sensor
- Wiring short circuit
- Oxidation of sensor connector contacts
- Mechanical damage to the harness (chafing, accident)
- Malfunction of the parking sensor itself
- Problems with the parking system control unit
How to Fix
- Visually inspect the wiring harness for damage
- Checking the sensor connector contacts for oxidation
- Checking the sensor circuit with a multimeter
- Replacement of the damaged section of the harness if necessary
- Cleaning the connector contacts
- Replacing the parking sensor if it is faulty
- Resetting the error by the scanner after repair
Related codes
FAQ
What does the B270B code mean?
B270B is an OBD-II diagnostic trouble code that indicates: Rear Sonar Sensor Right Inner Harness
What causes a B270B error code?
The most common causes of B270B include: Broken wires in the harness to the sensor; Wiring short circuit; Oxidation of sensor connector contacts; Mechanical damage to the harness (chafing, accident).
How do I fix a B270B diagnostic trouble code?
To fix B270B: Visually inspect the wiring harness for damage. Checking the sensor connector contacts for oxidation. Checking the sensor circuit with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B270B?
Yes, but get it checked soon
How much does it cost to fix B270B?
The estimated repair cost for B270B is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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