U0015

Medium Speed CAN Communication Bus (-) Open

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine light comes on
Incorrect operation of various vehicle systems
Lost connection with diagnostic equipment
Dashboard malfunctions
Errors in other modules

Causes

Mechanical damage to CAN bus wires
Corrosion of contacts in connectors
Malfunction of one of the modules on the CAN bus
Problems with module power supply
Open or short circuit in wiring harness

How to Fix

Check the integrity of the CAN bus wires
Inspect connectors for corrosion or damage
Check power supply and grounding of modules
Diagnose each module on the CAN bus
Replace damaged wires or connectors

Related codes

U0010 U0020 U0100