The most common causes of P1A90 include: On-board charger (OBC) communication error; Charging port connection issue; DC-DC converter malfunction; Charge controller fault. A professional OBD-II scan tool is recommended for accurate diagnosis.

How do I fix P1A90 for Kia EV9?

Recommended steps to address P1A90: (1) Schedule service as soon as possible (2) Reduce driving speed and avoid long trips (3) Monitor for additional warning messages (4) Have the vehicle diagnosed by a certified technician. Always consult a qualified EV technician for high-voltage system repairs.

Is it safe to drive with P1A90?

Driving with P1A90 is not recommended for extended distances. Schedule service within a few days to prevent further damage. Monitor for any additional warning lights.

Kia EV9

P1A90

Warning

Integrated Charging Control Unit (ICCU) Fault

Severity

Warning

What does P1A90 mean?

Fault code P1A90 means "Integrated Charging Control Unit (ICCU) Fault". This is a Kia-specific EV diagnostic trouble code for the Hyundai-Kia E-GMP platform. It is classified as "charging" with a severity level of "warning". Applicable models: Kia EV6 (2022+), Kia EV9 (2024+), Kia EV3 (2024+), Kia Niro EV (2023+).

Possible Causes

On-board charger (OBC) communication error
Charging port connection issue
DC-DC converter malfunction
Charge controller fault

Recommended Actions

1 Schedule service as soon as possible
2 Reduce driving speed and avoid long trips
3 Monitor for additional warning messages
4 Have the vehicle diagnosed by a certified technician

This code applies to all vehicles. View generic P1A90 information →