Engine-Codes - Generic - P1049

P1049 Code - Reductant Injector High Control Circuit High Voltage

- Code Popularity: 12,865 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P1049 Code?

  • 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 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 P1049 code?

Labor: 1.0

The cost to diagnose the P1049 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.

|What are P1049 code possible symptoms?

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

|What Does the P1049 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.

Reductant Injector High Control Circuit High Voltage

|Need more information with the P1049 code?

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|P1049 code information for specific makes

  • P1049 AUDI Bank 1 Camshaft Adjustment Valve 1 Short To Ground
  • P1049 BMW Valvetronic Control Circuit Engine Cable Short Circuit
  • P1049 BUICK Reductant Injector High Control Circuit High Voltage
  • P1049 CADILLAC Reductant Injector High Control Circuit High Voltage
  • P1049 CHEVROLET Reductant Injector High Control Circuit High Voltage
  • P1049 DODGE Upshift Lamp Circuit
  • P1049 GMC Reductant Injector High Control Circuit High Voltage
  • P1049 MINI Valvetronic Control Circuit Engine Cable Short Circuit
  • P1049 VOLKSWAGEN Bank 1 Camshaft Adjustment Valve 1 Short To Ground

|Need help with a P1049 code?

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