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P1624 – Kia DTC

Kia DTC P1624 – MIL Request Signal from TCM to ECM

DTC P1624 meaning on Kia

DTC P1624 refers to the MIL (Malfunction Indicator Lamp) Request Signal sent from the Transmission Control Module (TCM) to the Engine Control Module (ECM) in Kia vehicles. This code indicates a communication issue between the TCM and ECM, specifically a request from the TCM to illuminate the Check Engine Light.

Kia DTC P1624 symptoms

  • Check Engine Light (MIL) may be illuminated on the dashboard.
  • Transmission may exhibit shifting issues or abnormal behavior.
  • Vehicle may go into a limp mode to prevent further damage.

Kia DTC P1624 causes

  • Faulty wiring or connectors between the TCM and ECM.
  • Defective TCM or ECM.
  • Software issues within the TCM or ECM.

Kia DTC P1624 seriousness

The seriousness of DTC P1624 lies in the fact that it indicates a communication breakdown between critical control modules in the vehicle. Ignoring this code can lead to potential transmission issues and further damage if not addressed promptly.

How to diagnose DTC P1624 on Kia

  1. Use a diagnostic scanner to retrieve the specific fault codes stored in the TCM and ECM.
  2. Inspect the wiring harness and connectors between the TCM and ECM for any visible damage or corrosion.
  3. Perform a communication test between the TCM and ECM to check for proper signal transmission.

How to fix DTC P1624 on Kia

  1. Repair or replace any damaged wiring or connectors between the TCM and ECM.
  2. If the TCM or ECM is found to be faulty, it may need to be replaced or reprogrammed.
  3. Update the software in the TCM and ECM to the latest version to address any potential software issues.

How to erase DTC P1624 on Kia

  1. Use a diagnostic scanner to clear the fault codes stored in the TCM and ECM.
  2. After performing the necessary repairs, drive the vehicle to ensure the code does not return.

Recommended tools for Kia diagnostics

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