Engine-Codes - Buick - P1049 Buick

P1049 Buick Code - Reductant Injector High Control Circuit High Voltage

- Code Popularity: 128 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P1049 Buick?

  • Faulty Reductant Injector
  • Reductant Injector harness is open or shorted
  • Reductant Injector circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

|How to Fix the P1049 Buick Code?

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 Code P1049 Buick?

Labor: 1.0

The cost to diagnose the P1049 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.

Does your Buick have Safety Recalls? → Check here

|What are Code P1049 Buick Possible Symptoms?

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

|What Does the P1049 Buick Code Mean?

The Reductant Injector is a component of selective catalytic reduction system used to dose the reductant fluid to the exhaust gas and participate in the reduction reactions. The Engine Control Module (ECM) calculates the injection time of the reductant injector based on the measurement of the NOx sensors. To activate the injector the ECM supplies a PWM signal to the high control circuit and the low control circuit is always commanded ON. The Diagnostic Trouble Code (DTC) will be set when the Reductant Control Module detects a short to voltage in the high control circuit.

P1049 Buick Code - Reductant Injector High Control Circuit High Voltage

|Need more Information on the P1049 Buick Code?

Need more information on how to fix the P1049 Buick code? Get Access to Factory Service Manuals

|Need Help with the P1049 Buick Code?

Get the P1049 Buick code diagnosed by a professional: Find a repair shop in your area