Engine-Codes - Cadillac - P1019 CADILLAC

P1019 CADILLAC Code - Reductant Control Module Sensor Communication Voltage Supply Circuit High Voltage

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

|P1019 CADILLAC code possible causes

  • Faulty Reductant Control Module
  • Reductant Control Module harness is open or shorted
  • Reductant Control Module circuit poor electrical connection
  • Faulty Reductant Quality Sensor

|How is the P1019 CADILLAC 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 P1019 CADILLAC code

Labor: 1.0

The cost to diagnose the P1019 CADILLAC 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 P1019 CADILLAC code possible symptoms?

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

|What is P1019 CADILLAC code meaning?

The Reductant Quality Sensor is located in the reductant tank and uses an ultrasonic signal to measure reductant fluid quality. The Reductant Quality Sensor includes an integrated temperature sensor to measure reductant fluid temperature. The Reductant Quality Sensor communicates with the Reductant Control Module using serial data. The Diagnostic Trouble Code (DTC) will be set if the reductant control module detects a short to voltage on the 5 V reference circuit for greater than 1 s

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