OBD Guide
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B177D

5th Bow Latch Open Sensor

B177D is an OBD-II diagnostic trouble code meaning: 5th Bow Latch Open Sensor. Common causes: oxidation of sensor contacts, open or shorted wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Inability to open or close the roof
  • Warning indication on the instrument panel
  • Incorrect operation of the roof mechanism

Causes

  • Oxidation of sensor contacts
  • Open or shorted wiring harness
  • Mechanical damage to the sensor
  • Roof control ECU malfunction

How to Fix

  1. Check the condition of the sensor and its contacts
  2. Check the integrity of the wiring harness
  3. Replace the faulty sensor if necessary
  4. Update ECU software if necessary

Related codes

B177CB177E

FAQ

What does the B177D code mean?

B177D is an OBD-II diagnostic trouble code that indicates: 5th Bow Latch Open Sensor

What causes a B177D error code?

The most common causes of B177D include: Oxidation of sensor contacts; Open or shorted wiring harness; Mechanical damage to the sensor; Roof control ECU malfunction.

How do I fix a B177D diagnostic trouble code?

To fix B177D: Check the condition of the sensor and its contacts. Check the integrity of the wiring harness. Replace the faulty sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B177D?

Limited driving only, diagnose soon

How much does it cost to fix B177D?

The estimated repair cost for B177D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat