Engine-Codes - Generic - P1003

P1003 - EFI System Relay Contacts Open

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1003 Possible Causes

  • Faulty EFI System Relay
  • EFI System Relay harness is open or shorted
  • EFI System Relay circuit poor electrical connection

How is the P1003 code repair?

Start by checking 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's pins.

What is the cost to diagnose the P1003 code

Labor: 1.0

The cost to diagnose the P1003 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P1003 Meaning

EFI System Relay Contacts Open is the generic description for the P1003 code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information abouth the P1003 OBDII code.

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More Information

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