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AutoCodes - Generic - P2603

P2603 Code - Coolant Pump 'A' Control Circuit High

- Code Popularity: 13,114 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2603?

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 Coolant Pump Relay
  • Faulty Coolant Pump
  • Coolant Pump harness is open or shorted
  • Coolant Pump poor electrical connection
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How to Fix the DTC P2603?

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 P2603 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 P2603 Description

The Powertrain Control Module (PCM) monitors the Coolant Pump 'A' Control Circuit signal. The PCM sets the OBDII code when the Coolant Pump 'A' Control Circuit signal is out of factory specifications.

OBDII Code P2603 - Coolant Pump 'A' Control Circuit High - AutoCodes.com
P2603 Code - Coolant Pump 'A' Control Circuit High

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Information for Specific Makes

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Code P2603 comments

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