OBD Guide
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B10AD

Rain Sensor Value of Signal Protection Calculation Incorrect

B10AD is an OBD-II diagnostic trouble code meaning: Rain Sensor Value of Signal Protection Calculation Incorrect. Common causes: rain sensor malfunction, damage to the sensor wiring harness. Estimated repair cost: $22–167.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Incorrect operation of automatic windshield wipers
  • Windshield wipers run for no apparent reason
  • Windshield wipers do not respond to rain
  • Error message on the dashboard

Causes

  • Rain sensor malfunction
  • Damage to the sensor wiring harness
  • Poor contact in sensor connectors
  • Malfunction of the windshield wiper control unit
  • Incorrect installation or calibration of the sensor after glass replacement
  • Problems with the control unit software

How to Fix

  1. Visually check the rain sensor and its connections
  2. Check the integrity of the sensor wiring harness
  3. Clean the surface of the sensor and the windshield in the area where it is installed
  4. Check the contacts in the sensor and control unit connectors
  5. If necessary, replace the rain sensor
  6. Calibrate the rain sensor (if equipped)
  7. Check/update control unit software

Related codes

B10AEB10AFU0121

FAQ

What does the B10AD code mean?

B10AD is an OBD-II diagnostic trouble code that indicates: Rain Sensor Value of Signal Protection Calculation Incorrect

What causes a B10AD error code?

The most common causes of B10AD include: Rain sensor malfunction; Damage to the sensor wiring harness; Poor contact in sensor connectors; Malfunction of the windshield wiper control unit.

How do I fix a B10AD diagnostic trouble code?

To fix B10AD: Visually check the rain sensor and its connections. Check the integrity of the sensor wiring harness. Clean the surface of the sensor and the windshield in the area where it is installed. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B10AD?

Limited driving only, diagnose soon

How much does it cost to fix B10AD?

The estimated repair cost for B10AD is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat