U0013

Medium Speed CAN Communication Bus (+) Low

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 vehicle systems
Problems with data transfer between modules
Intermittent electronic malfunctions
Possible problems starting the engine

Causes

Broken or damaged CAN bus wires
Poor contact in bus connectors
Short circuit in the CAN bus circuit
Fault in one of the modules connected to the bus
Problems with module power supply

How to Fix

Check the integrity of the CAN bus wires
Inspect connectors for oxidation or damage
Check the voltage on the CAN bus
Diagnose modules connected to the bus
Replace damaged components if necessary

Related codes

U0014 U0011 U0012