AutoCodes – Generic – P065D

P065D Code - Reductant System Malfunction Lamp Control Circuit

Quick Answer

The Engine Control Module (ECM) monitors the Reductant System Malfunction Lamp Control Circuit. Common causes include Faulty Reductant System Malfunction Lamp, Reductant System Malfunction Lamp harness is open or shorted, Reductant System Malfunction Lamp 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: P065D indicates Reductant System Malfunction Lamp Control Circuit.
Common causes: Common causes include Faulty Reductant System Malfunction Lamp, Reductant System Malfunction Lamp harness is open or shorted, Reductant System Malfunction Lamp 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 2,830

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P065D Description

The Engine Control Module (ECM) monitors the Reductant System Malfunction Lamp Control Circuit. The ECM sets the OBDII code when the Reductant System Malfunction Lamp Control Circuit is not to factory specifications.

OBDII Code P065D - Reductant System Malfunction Lamp Control Circuit - AutoCodes.com — P065D Code - Reductant System Malfunction Lamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC P065D?

Faulty Reductant System Malfunction Lamp
Reductant System Malfunction Lamp harness is open or shorted
Reductant System Malfunction Lamp circuit poor electrical connection

How to Fix the DTC P065D?

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 P065D 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 P065D code?

Need more information on how to fix the P065D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P065D 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 P065D Code

1. What are the common symptoms of OBDII code P065D (Reductant System Malfunction Lamp Control Circuit)?

- Common symptoms include the illumination of the check engine light, reduced engine performance, and potential issues with the reductant system.

2. What could cause OBDII code P065D to trigger?

- The code P065D may be triggered by a malfunction in the control circuit of the reductant system, such as a faulty sensor or wiring issue.

3. How can I diagnose the cause of OBDII code P065D?

- Diagnosing the cause of P065D typically involves using a scan tool to retrieve the code, then performing a thorough inspection of the reductant system components and their wiring.

4. Can I drive my vehicle with OBDII code P065D active?

- It is generally not recommended to drive with the P065D code active, as it can lead to reduced engine performance and potential damage to the reductant system components.

5. What are the possible repair options for OBDII code P065D?

- Repair options for code P065D may include replacing faulty sensors, repairing damaged wiring, or resetting the code after addressing the underlying issue in the reductant system control circuit.

6. Will resetting the OBDII code P065D make it go away permanently?

- Resetting the code without addressing the root cause will not make it go away permanently. It is crucial to diagnose and repair the underlying issue to prevent the code from reoccurring.

7. How can I prevent OBDII code P065D from coming back?

- To prevent the reoccurrence of code P065D, it is essential to ensure regular maintenance of the reductant system, address any wiring issues promptly, and use quality components during repairs.

8. Is OBDII code P065D a serious issue?

- While code P065D may not pose an immediate danger to the vehicle, it can lead to reduced engine performance and increased emissions if left unresolved for an extended period.

9. Can a DIY enthusiast fix OBDII code P065D at home?

- Depending on their skill level, a DIY enthusiast may be able to fix P065D at home by following the diagnostic steps, replacing faulty components, or repairing wiring issues with the help of a repair manual.

10. How long does it typically take to repair OBDII code P065D?

- The time needed to repair code P065D can vary based on the cause of the issue, availability of parts, and individual skill level, but it generally takes a few hours to a day to complete the repair.