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C2303 Toyota Code - Short In Power Source Relay Circuit

- Code Popularity: 4,442 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C2303 Toyota?

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 Transmission Control ECU Assembly
  • Transmission Control ECU harness is open or shorted
  • Transmission Control ECU circuit poor electrical connection
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How to Fix the DTC C2303 Toyota?

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 C2303 Toyota 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?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

Code C2303 Toyota Description

The integration relay is activated by output voltage from the Transmission Control ECU and supplies power to the shift control actuator (parking lock motor). The Transmission Control ECU outputs this Diagnostic Trouble Code (DTC) when it detects a malfunction in the integration relay.

OBDII Code C2303 Toyota - Short In Power Source Relay Circuit - AutoCodes.com
C2303 Toyota Code - Short In Power Source Relay Circuit

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Code C2303 Toyota comments

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