AutoCodes - Buick - P0203 BUICK

P0203 BUICK Code - Injector 3 Control Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0203 BUICK code possible causes

  • Faulty fuel injector 3
  • Fuel Injector 3 harness is open or shorted
  • Fuel injector 3 circuit poor electrical connection

|How do I fix the P0203 BUICK code?

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's pins.

|Cost of diagnosing the P0203 BUICK code

Labor: 1.0

The cost of diagnosing the P0203 BUICK code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0203 BUICK code detected?

If an electrical malfunction occurs in the fuel injector circuit for engine cylinder #3, the ignition feed driver signals the Powertrain Control Module (PCM) to set the P0203 code.

|What are P0203 BUICK code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of Power
  • The engine may be harder to start
  • Engine hesitation

|P0203 BUICK code description

The Powertrain Control Module (PCM) controls the fuel injectors by using an ignition feed driver and ground circuit within the PCM. The driver has the ability to detect an electrical malfunction in the ignition feed or ground circuit.
OBDII Code P0203 Buick - Injector 3 Control Circuit -

|Need more information with the P0203 BUICK code?

Need more information on how to fix the P0203 BUICK code? Get Access to Factory Service Manuals

|Need help with a P0203 BUICK code?

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|P0203 BUICK code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0203 Buick code? Have you replaced any parts?
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