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P1603 KIA Code - CAN Communication Bus Error

- Code Popularity: 16,267 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1603 KIA?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Transaxle Control Module(TCM) or Engine Control Module(ECM)
  • Transaxle Control Module(TCM) to Engine Control Module(ECM) harness is open or shorted
  • Transaxle Control Module(TCM) to Engine Control Module(ECM) circuit poor electrical connection
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How to Fix the DTC P1603 KIA?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1603 KIA code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1603 KIA Description

A communication line exists between the Engine Control Module(ECM) and the Transaxle Control Module(TCM). The communication is through a Control Area Network(CAN). Without CAN communication, an independent pin and wiring is needed to receive a sensor information from a ECM. The more information to be communicated, the more wirings is required. In case of CAN communication type, all the information need to be communicated among control modules such as ECM and TCM use CAN lines.

OBDII Code P1603 KIA - CAN Communication Bus Error - AutoCodes.com
P1603 KIA Code - CAN Communication Bus Error

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Code P1603 KIA comments

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