OBD Guide
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B157B

Satellite Region Mismatch US/Canada

B157B is an OBD-II diagnostic trouble code meaning: Satellite Region Mismatch US/Canada. Common causes: changing the vehicle's geographic region, communication module software error. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Disabling satellite services (navigation, radio)
  • Warning message on display
  • Security system fault indication

Causes

  • Changing the vehicle's geographic region
  • Communication module software error
  • Firmware mismatch
  • Physical damage to the antenna/module
  • Signal interference

How to Fix

  1. Diagnostics of the satellite module with a scanner
  2. Checking the integrity of the wiring harness and antenna
  3. Module software update
  4. Manual region adjustment via dealer equipment
  5. Replacing the satellite module if necessary

Related codes

B157AB157CU0155

FAQ

What does the B157B code mean?

B157B is an OBD-II diagnostic trouble code that indicates: Satellite Region Mismatch US/Canada

What causes a B157B error code?

The most common causes of B157B include: Changing the vehicle's geographic region; Communication module software error; Firmware mismatch; Physical damage to the antenna/module.

How do I fix a B157B diagnostic trouble code?

To fix B157B: Diagnostics of the satellite module with a scanner. Checking the integrity of the wiring harness and antenna. Module software update. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B157B?

Yes, but get it checked soon

How much does it cost to fix B157B?

The estimated repair cost for B157B is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat