Free API
U0338moderate severityNetwork

Lost Communication With Multi-Axle Suspension Control Module

on 2015 Kia Forte 1.8L I4 · FWD

What this code means

The vehicle network has lost communication with the multi-axle suspension control module. This can affect ride height and load leveling functions.

Symptoms

  • Suspension warning light on
  • Ride height incorrect
  • Rough or uneven ride

Common causes

  • Faulty suspension control module
  • Wiring or connector fault on CAN bus
  • Blown module fuse or bad ground
  • Corroded module connectors

Diagnostic steps

  1. Scan all modules for communication codes
  2. Check power and ground at the module
  3. Inspect CAN wiring for the module
  4. Test module data on the network

Other Network codes on this vehicle

For shop owners
Diagnosing for customers?
Text them the estimate with photos and get approval in minutes with Auto Shop Base.
Talk to the ownerSee what's included
Built by a shop owner. Talk to Chris, not a sales rep.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
🔓 LIBERATED FOREVER
The 2015 Kia Forte 1.8L I4 repair data is free for every DIYer and shop on earth, permanently, because Simon-Olivier Ricci paid $99 to unlock it.
Mitchell1 charges $169/mo for this. ALLDATAdiy charges $30/yr per vehicle. Open Labor Project is free permanently, because of community sponsors like Simon-Olivier.
Free another vehicle →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
A free website, SEO and Google reviews with your shop software. Auto Shop Base Professional, $250/mo, with our labor times on every estimate.
See what's included →