OBD Guide

U0087

Vehicle Communication Bus F - High

U0087 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus F - High. Common causes: faulty module connected to bus f, damage to the communication bus wiring harness. Estimated repair cost: $17–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–111 (est.)

Symptoms

  • Incorrect operation of electronic systems
  • Check Engine Light Illuminates
  • Lost connection with some modules
  • Diagnostic problems

Causes

  • Faulty module connected to bus F
  • Damage to the communication bus wiring harness
  • Short circuit in the circuit
  • Problems with module power supply

How to Fix

  1. Check the integrity of the F bus wiring harness
  2. Diagnose modules connected to bus F
  3. Check connections and contacts
  4. Replace the faulty module if necessary

Related codes

Error U0087 by Vehicle Brand

FAQ

What does the U0087 code mean?

U0087 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus F - High

What causes a U0087 error code?

The most common causes of U0087 include: Faulty module connected to bus F; Damage to the communication bus wiring harness; Short circuit in the circuit; Problems with module power supply.

How do I fix a U0087 diagnostic trouble code?

To fix U0087: Check the integrity of the F bus wiring harness. Diagnose modules connected to bus F. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0087?

Yes, but get it checked soon

How much does it cost to fix U0087?

The estimated repair cost for U0087 is $17–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat