U0016

Medium Speed CAN Communication Bus (-) Low

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Unstable engine operation
Gear shifting problems
Check Engine Light Is On
Lost connection with some modules
Malfunctions of electronic systems

Causes

Open or shorted CAN bus wiring
Poor contact in the connector
Control module malfunction
Corrosion of connections
Wiring harness damage

How to Fix

Check the integrity of the CAN bus wiring
Inspect connectors for corrosion or damage
Check the voltage on the CAN bus
Diagnose connected control modules
Replace damaged wires or connectors

Related codes

U0015 U0017 U0018