OBD Guide
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B1874

Cellular Phone Handset Not Present

B1874 is an OBD-II diagnostic trouble code meaning: Cellular Phone Handset Not Present. Common causes: bluetooth module malfunction, hands-free wiring harness problems. Estimated repair cost: $56–167.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • No connection to phone
  • Inability to make calls via Hands-Free
  • Error message on display

Causes

  • Bluetooth module malfunction
  • Hands-Free Wiring Harness Problems
  • Software failure
  • Incorrect system setup

How to Fix

  1. Check your phone's connection to the Hands-Free system
  2. Reboot Bluetooth system
  3. Check wiring harness for damage
  4. Update system software
  5. Contact the service center if necessary

Related codes

B1875B1876

FAQ

What does the B1874 code mean?

B1874 is an OBD-II diagnostic trouble code that indicates: Cellular Phone Handset Not Present

What causes a B1874 error code?

The most common causes of B1874 include: Bluetooth module malfunction; Hands-Free Wiring Harness Problems; Software failure; Incorrect system setup.

How do I fix a B1874 diagnostic trouble code?

To fix B1874: Check your phone's connection to the Hands-Free system. Reboot Bluetooth system. Check wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1874?

Yes, but get it checked soon

How much does it cost to fix B1874?

The estimated repair cost for B1874 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat