AutoCodes – Cadillac – P2ADD Cadillac

P2ADD Cadillac Code - Reductant Tank Temperature Sensor 2 Circuit Erratic

Quick Answer

The Reductant Quality Sensor includes an integrated temperature sensor to measure reductant fluid temperature. Common causes include Faulty Reductant Quality Sensor, Reductant Quality Sensor harness is open or shorted, Reductant Quality Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2ADD Cadillac indicates Reductant Tank Temperature Sensor 2 Circuit Erratic.
Common causes
Common causes include Faulty Reductant Quality Sensor, Reductant Quality Sensor harness is open or shorted, Reductant Quality Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 318
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 01, 2021
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Code P2ADD Cadillac Description

The Reductant Quality Sensor includes an integrated temperature sensor to measure reductant fluid temperature. The Reductant Quality Sensor is located in the reductant tank and uses an ultrasonic signal to measure reductant fluid quality. The Reductant Quality Sensor communicates with the Reductant Control Module using serial data. The Diagnostic Trouble Code (DTC) will be set when the Reductant Control Module detects a performance fault on the reductant quality sensor temperature signal for greater than 1 s.
OBDII Code P2ADD Cadillac - Reductant Tank Temperature Sensor 2 Circuit Erratic - AutoCodes.com
P2ADD Cadillac Code - Reductant Tank Temperature Sensor 2 Circuit Erratic

What are the Possible Causes of the DTC P2ADD Cadillac?

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

How to Fix the DTC P2ADD Cadillac?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2ADD Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2ADD Cadillac code?

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Need Help with the Code?

Get the P2ADD Cadillac code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2ADD Cadillac Code

1. What are common symptoms of OBDII code P2ADD in a Cadillac related to the Reductant Tank Temperature Sensor 2 Circuit Erratic?

Symptoms may include check engine light illumination, reduced engine performance, and potential issues with the vehicle's emission systems.

2. What can cause the Reductant Tank Temperature Sensor 2 Circuit Erratic code in a Cadillac?

Potential causes include a faulty temperature sensor, damaged wiring or connectors, issues with the reductant tank itself, or problems with the engine control module.

3. How serious is the P2ADD Cadillac code related to the Reductant Tank Temperature Sensor 2 Circuit Erratic?

While the vehicle may still be operable, it is important to address the issue promptly to ensure optimal engine performance and to prevent potential harm to the emission control system.

4. How can I diagnose the Reductant Tank Temperature Sensor 2 Circuit Erratic code in my Cadillac?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the sensor and associated components for damage, and checking the wiring for any issues.

5. Can I continue driving my Cadillac with the P2ADD code related to the Reductant Tank Temperature Sensor 2 Circuit Erratic?

It is generally not recommended to ignore the issue and continue driving, as it can lead to further damage to the vehicle's emission control system and potentially cause a decrease in fuel efficiency.

6. What are some repair tips for fixing the Reductant Tank Temperature Sensor 2 Circuit Erratic code in a Cadillac?

Repair tips may include replacing the faulty sensor, repairing damaged wiring or connectors, ensuring proper connection to the reductant tank, and clearing the fault code with an OBDII scanner.

7. How much does it typically cost to repair the Reductant Tank Temperature Sensor 2 Circuit Erratic code in a Cadillac?

Costs can vary depending on the extent of the issue, the parts needed for repair, and whether you choose to address the problem yourself or take your vehicle to a professional mechanic.

8. Can a DIY enthusiast fix the P2ADD Cadillac code related to the Reductant Tank Temperature Sensor 2 Circuit Erratic?

While some individuals with automotive knowledge may be able to tackle the repair themselves, it is recommended to have a good understanding of the system and access to the necessary tools before attempting a DIY fix.

9. Will resetting the fault code resolve the Reductant Tank Temperature Sensor 2 Circuit Erratic issue in my Cadillac?

Simply resetting the fault code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the code to appear.

10. How often does the Reductant Tank Temperature Sensor 2 Circuit Erratic code occur in Cadillacs?

While the frequency of this specific code can vary, issues related to reductant tank temperature sensors are not uncommon in vehicles equipped with emission control systems like Cadillacs.

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