Back to 2024 Kia EV9
Help
2024 KIA EV9
Light Single Motor RWD•RWD•AUTOMATIC•ev
7 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs0Labor323Torque3756Fluid5DTC739Battery1Maintenance0Recalls7
P1586moderate severityPowertrain

AT/MT Codification Signal Not Plausible

on 2024 Kia EV9 Light Single Motor RWD · RWD

What this code means

The PCM has received a transmission codification signal that does not match the expected transmission type. The signal indicating whether an automatic or manual transmission is installed is incorrect or missing.

Symptoms

  • Check Engine Light
  • Transmission may enter limp mode
  • Incorrect shift patterns
  • Engine performance may be limited

Common causes

  • Incorrect PCM software for transmission type
  • Wiring issue in transmission codification circuit
  • Aftermarket transmission swap without PCM recoding
  • PCM connector issue
  • TCM programming mismatch

Diagnostic steps

  1. Verify PCM software matches installed transmission type
  2. Check transmission codification wiring
  3. Inspect PCM and TCM connectors
  4. Verify correct PCM part number for vehicle configuration
  5. Reprogram PCM if needed

Repair notes

Reprogram the PCM with the correct transmission configuration software.

🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITE
Shop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other Powertrain codes on this vehicle

🔌 Need this data in your app? It's all in the free API →
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 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
Share:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 2024 Kia EV9 repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Kia EV9 — $99 →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →