AutoCodes – Cadillac – P1016 Cadillac

P1016 Cadillac Code - Reductant Control Module Sensor Serial Communication Circuit High Voltage

Quick Answer

The Reductant Quality Sensor is located in the reductant tank and uses an ultrasonic signal to measure reductant fluid quality. Common causes include Faulty Reductant Control Module, Reductant Control Module harness is open or shorted, Reductant Control Module 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
P1016 Cadillac indicates Reductant Control Module Sensor Serial Communication Circuit High Voltage.
Common causes
Common causes include Faulty Reductant Control Module, Reductant Control Module harness is open or shorted, Reductant Control Module 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 490
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 24, 2021
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Code P1016 Cadillac Description

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 high circuit fault on the signal circuit for greater than 1 s.
OBDII Code P1016 Cadillac - Reductant Control Module Sensor Serial Communication Circuit High Voltage - AutoCodes.com
P1016 Cadillac Code - Reductant Control Module Sensor Serial Communication Circuit High Voltage

What are the Possible Causes of the DTC P1016 Cadillac?

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

How to Fix the DTC P1016 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 P1016 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 P1016 Cadillac code?

Need more information on how to fix the P1016 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1016 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 P1016 Cadillac Code

1. What are the common symptoms of OBDII code P1016 in a Cadillac related to the Reductant Control Module Sensor Serial Communication Circuit High Voltage?

- Common symptoms include the Check Engine Light (CEL) illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.

2. What are the possible causes of OBDII code P1016 in a Cadillac?

- Possible causes include a faulty Reductant Control Module, issues with the sensor circuit wiring, a malfunctioning sensor, or problems with the vehicle's onboard computer system.

3. How can I diagnose the OBDII code P1016 in my Cadillac?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the wiring and connectors related to the Reductant Control Module sensor, and potentially performing tests on the sensor itself.

4. How serious is OBDII code P1016 in a Cadillac?

- While this code may not cause immediate drivability issues, it can impact the vehicle's emissions system and overall performance. It is recommended to address the underlying problem promptly to prevent further damage.

5. Can I still drive my Cadillac with OBDII code P1016 present?

- It is generally safe to drive the vehicle with this code, but it is advisable to have the issue diagnosed and repaired as soon as possible to avoid potential long-term damage and ensure optimal performance.

6. What are some repair tips for addressing OBDII code P1016 in a Cadillac?

- Repair tips may include checking for any loose or damaged wiring, ensuring proper sensor connections, and potentially replacing the Reductant Control Module or sensor if deemed faulty.

7. How much does it cost to fix OBDII code P1016 in a Cadillac?

- The cost of fixing this code can vary depending on the specific underlying issue, parts needed for repair, and labor rates. It is recommended to consult a professional mechanic for an accurate estimate.

8. Can resetting the Check Engine Light resolve OBDII code P1016 in a Cadillac?

- Resetting the Check Engine Light may temporarily clear the code, but it will likely reappear if the underlying issue is not addressed. It is best to diagnose and repair the root cause of the problem.

9. Are there any recalls or technical service bulletins related to OBDII code P1016 in Cadillac vehicles?

- It is recommended to check with a Cadillac dealership or online resources for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or remedies provided by the manufacturer.

10. How can I prevent OBDII code P1016 from occurring in my Cadillac in the future?

- Regular maintenance, such as keeping the vehicle's emissions system in good condition, checking for any signs of wiring or sensor issues, and addressing any Check Engine Light promptly, can help prevent the recurrence of this code.

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