AutoCodes – Acura – P16DB Acura

P16DB Acura Code - Electric Vacuum Pump Relays 1 And 2 Signal Circuit Malfunction

Quick Answer

The Powertrain Control Module (PCM) monitors the Electric Vacuum Pump Relays 1 And 2 Signal. Common causes include Faulty Electric Vacuum Pump Relays, Electric Vacuum Pump Relays harness is open or shorted, Electric Vacuum Pump Relays 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
P16DB Acura indicates Electric Vacuum Pump Relays 1 And 2 Signal Circuit Malfunction.
Common causes
Common causes include Faulty Electric Vacuum Pump Relays, Electric Vacuum Pump Relays harness is open or shorted, Electric Vacuum Pump Relays 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 2,022
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 10, 2020
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Code P16DB Acura Description

The Powertrain Control Module (PCM) monitors the Electric Vacuum Pump Relays 1 And 2 Signal. The PCM sets the OBDII code when the Electric Vacuum Pump Relays 1 And 2 Signal is not to factory specifications.
OBDII Code P16DB Acura - Electric Vacuum Pump Relays 1 And 2 Signal Circuit Malfunction - AutoCodes.com
P16DB Acura Code - Electric Vacuum Pump Relays 1 And 2 Signal Circuit Malfunction

What are the Possible Causes of the DTC P16DB Acura?

  • Faulty Electric Vacuum Pump Relays
  • Electric Vacuum Pump Relays harness is open or shorted
  • Electric Vacuum Pump Relays circuit poor electrical connection

How to Fix the DTC P16DB Acura?

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 P16DB Acura 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 P16DB Acura code?

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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 P16DB Acura Code

1. What does the OBDII code P16DB mean in an Acura?

P16DB indicates a malfunction in the signal circuit for Electric Vacuum Pump Relays 1 and 2, which are responsible for controlling the electric vacuum pump used in the braking or emissions system.

2. What are the common symptoms of the P16DB code?

Common symptoms include a check engine light, reduced braking performance, increased brake pedal effort, or a noticeable decrease in vacuum pump operation.

3. What causes the P16DB code to appear?

This code is typically caused by faulty electric vacuum pump relays, wiring issues such as damaged or corroded connectors, or a malfunctioning vacuum pump.

4. Can I drive my Acura with a P16DB code?

It is not recommended to drive with this code, as it could impact the braking system's performance, potentially compromising safety.

5. How can I diagnose the P16DB code in my Acura?

Diagnose the code by inspecting the relays, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the signal circuit.

6. What repairs are commonly needed for the P16DB code?

Repairs may include replacing the faulty electric vacuum pump relays, repairing or replacing damaged wiring, or replacing the vacuum pump if it is defective.

7. How much does it cost to fix the P16DB code?

Repair costs depend on the specific issue but typically range from $150 to $500, including parts and labor, with relay replacement being less expensive than replacing the vacuum pump.

8. Can a bad vacuum pump cause the P16DB code?

Yes, a malfunctioning vacuum pump can trigger this code if it fails to generate adequate vacuum or sends incorrect signals to the relays.

9. How do I prevent the P16DB code from reoccurring?

Regularly inspect and maintain the vacuum pump system, including checking relay connections for corrosion, replacing relays as needed, and ensuring wiring integrity.

10. Does the P16DB code affect emissions?

Yes, it can affect emissions in some cases, as the electric vacuum pump may play a role in emissions control, depending on the vehicle's design.

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