OBD Guide
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B177F

5th Bow Striker Sensor

B177F is an OBD-II diagnostic trouble code meaning: 5th Bow Striker Sensor. Common causes: roof lock sensor malfunction, open or shorted wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Inability to open or close the roof
  • Error indication on the instrument panel
  • Roof control system lock

Causes

  • Roof lock sensor malfunction
  • Open or shorted wiring harness
  • Sensor contact corrosion
  • Mechanical damage to the sensor

How to Fix

  1. Check the condition of the sensor and its contacts
  2. Check the integrity of the wiring harness
  3. Replace sensor if necessary
  4. Reset the error and check the system operation

Related codes

B1780B1781

FAQ

What does the B177F code mean?

B177F is an OBD-II diagnostic trouble code that indicates: 5th Bow Striker Sensor

What causes a B177F error code?

The most common causes of B177F include: Roof lock sensor malfunction; Open or shorted wiring harness; Sensor contact corrosion; Mechanical damage to the sensor.

How do I fix a B177F diagnostic trouble code?

To fix B177F: Check the condition of the sensor and its contacts. Check the integrity of the wiring harness. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B177F?

Do not drive — repair immediately

How much does it cost to fix B177F?

The estimated repair cost for B177F is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat