AutoCodes – Audi – P1466 Audi

P1466 Audi Code - Additive Pump Open/Short to Ground

Quick Answer

P1466 Audi indicates Additive Pump Open/Short to Ground. Common causes include Faulty Additive Pump, Additive Pump harness is open or shorted, Additive Pump 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
P1466 Audi indicates Additive Pump Open/Short to Ground.
Common causes
Common causes include Faulty Additive Pump, Additive Pump harness is open or shorted, Additive Pump 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,507
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 24, 2019
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Code P1466 Audi Description

OBDII Code P1466 Audi - Additive Pump Open/Short to Ground - AutoCodes.com
P1466 Audi Code - Additive Pump Open/Short to Ground

What are the Possible Causes of the DTC P1466 Audi?

  • Faulty Additive Pump
  • Additive Pump harness is open or shorted
  • Additive Pump circuit poor electrical connection

How to Fix the DTC P1466 Audi?

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 P1466 Audi 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 P1466 Audi code?

Need more information on how to fix the P1466 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1466 Audi 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 P1466 Audi Code

1. What are common symptoms of OBDII code P1466 in an Audi related to the Additive Pump Open/Short to Ground?

- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and potentially a check engine light.

2. What causes the OBDII code P1466 related to the Additive Pump Open/Short to Ground in an Audi?

- The code is typically triggered by a malfunction in the additive pump circuit, such as a short to ground or an open circuit.

3. How serious is the OBDII code P1466 in an Audi due to the Additive Pump issue?

- While the issue may not cause immediate harm to the vehicle, it can lead to increased emissions and reduced engine performance if left unresolved.

4. Can I continue driving my Audi with the OBDII code P1466 related to the Additive Pump Open/Short to Ground?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potentially fail emissions tests.

5. How can I diagnose the OBDII code P1466 in my Audi related to the Additive Pump issue?

- Diagnosing this code typically involves inspecting the wiring and connections related to the additive pump, as well as testing the pump itself for functionality.

6. What are some repair tips for fixing the OBDII code P1466 in an Audi due to the Additive Pump Open/Short to Ground?

- Repair tips may include checking and repairing any damaged wiring, replacing the additive pump if necessary, and clearing the code with a diagnostic tool.

7. Is it possible to reset the OBDII code P1466 in an Audi without fixing the Additive Pump issue?

- While it is possible to clear the code temporarily, the underlying issue with the additive pump should be addressed to prevent future problems.

8. How much does it typically cost to repair the OBDII code P1466 related to the Additive Pump Open/Short to Ground in an Audi?

- The cost of repair can vary depending on the extent of the issue, but it may involve parts and labor expenses ranging from $200 to $500 or more.

9. Can a DIY enthusiast fix the OBDII code P1466 in an Audi themselves?

- DIY enthusiasts with automotive repair experience may be able to diagnose and repair the issue themselves, but it is recommended to seek professional help if unsure.

10. How can I prevent the OBDII code P1466 related to the Additive Pump issue from reoccurring in my Audi?

- Regularly inspecting and maintaining the additive pump system, as well as addressing any related issues promptly, can help prevent the code from reoccurring.

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