OBD Guide
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B170A

Roof Open/Close Switch

B170A is an OBD-II diagnostic trouble code meaning: Roof Open/Close Switch. Common causes: faulty roof open/close switch, open or short circuit in wiring harness. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Roof opening/closing does not work
  • The roof does not work correctly (for example, it opens/closes partially)
  • The check engine or system error light comes on

Causes

  • Faulty roof open/close switch
  • Open or short circuit in wiring harness
  • Poor contact in switch connectors
  • Problems with the roof control module

How to Fix

  1. Check the condition of the roof switch (visual inspection, testing with a multimeter)
  2. Check the integrity of the wiring harness and connectors
  3. Replace the switch if necessary
  4. Clean or replace connectors if there are signs of corrosion
  5. Check and replace the roof control module if necessary

Related codes

B170BB170C

FAQ

What does the B170A code mean?

B170A is an OBD-II diagnostic trouble code that indicates: Roof Open/Close Switch

What causes a B170A error code?

The most common causes of B170A include: Faulty roof open/close switch; Open or short circuit in wiring harness; Poor contact in switch connectors; Problems with the roof control module.

How do I fix a B170A diagnostic trouble code?

To fix B170A: Check the condition of the roof switch (visual inspection, testing with a multimeter). Check the integrity of the wiring harness and connectors. Replace the switch if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B170A?

Yes, but get it checked soon

How much does it cost to fix B170A?

The estimated repair cost for B170A is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat