Engine-Codes - Hyundai - P1603 Hyundai

P1603 Hyundai Code - CAN Communication Bus Error

- Code Popularity: 21,372 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P1603 Hyundai?

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 Hyundai?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1603 Hyundai code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1603 Hyundai Code Mean?

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.

P1603 Hyundai Code - CAN Communication Bus Error

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