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P120D Ford Code - Secondary Fuel Injector Bank 2 Excessive Flow

Quick Answer

The P120D Ford diagnostic trouble code indicates that there is excessive flow in the secondary fuel injector bank 2. Common causes include Faulty secondary fuel injector, Clogged fuel injector, Fuel pressure regulator malfunction. 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
P120D Ford indicates Secondary Fuel Injector Bank 2 Excessive Flow .
Common causes
Common causes include Faulty secondary fuel injector, Clogged fuel injector, Fuel pressure regulator malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P120D Ford Description

The P120D Ford diagnostic trouble code indicates that there is excessive flow in the secondary fuel injector bank 2. This means that more fuel than necessary is being injected into the combustion chamber for one of the cylinders on bank 2 of the engine. This can lead to a variety of issues that can affect the vehicle's performance, fuel efficiency, and emissions.

OBDII Code P120D Ford - Secondary Fuel Injector Bank 2 Excessive Flow
P120D Ford Code - Secondary Fuel Injector Bank 2 Excessive Flow

Common Causes of P120D Ford

  1. Faulty secondary fuel injector
  2. Clogged fuel injector
  3. Fuel pressure regulator malfunction
  4. Fuel system leak
  5. Wiring or electrical issues

Symptoms of P120D Ford

  1. Rough idling
  2. Engine misfires
  3. Decreased fuel efficiency
  4. Black smoke from the exhaust
  5. Check Engine Light illuminated

How to Fix P120D Ford

  1. Diagnose the issue using a scan tool to confirm the P120D code and identify the specific cylinder on bank 2 with the excessive flow.
  2. Inspect the secondary fuel injector on bank 2 for any signs of damage or clogging. Replace if necessary.
  3. Check the fuel pressure regulator for proper operation and replace if faulty.
  4. Inspect the fuel system for any leaks and repair as needed.
  5. Clear the trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P120D Ford

The typical repair costs for addressing a P120D Ford code can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor in your area. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate. Remember that rates can be higher in metropolitan areas or at dealerships, while independent shops may offer more competitive prices.

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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 P120D Ford Code

1. What are common symptoms of OBDII code P120D Ford (Secondary Fuel Injector Bank 2 Excessive Flow)?

- Common symptoms include engine misfires, rough idling, loss of power, and decreased fuel efficiency.

2. What causes OBDII code P120D Ford to trigger?

- This code is typically triggered by a malfunctioning fuel injector on Bank 2, leading to an excessive flow of fuel.

3. How can I diagnose the issue related to OBDII code P120D Ford?

- You can diagnose the issue by performing a fuel injector test, checking for leaks in the fuel system, and inspecting the fuel pressure regulator.

4. Can a dirty fuel filter lead to OBDII code P120D Ford?

- Yes, a dirty fuel filter can restrict fuel flow and potentially cause excessive fuel to be delivered to Bank 2, triggering the code.

5. What are the potential dangers of ignoring OBDII code P120D Ford?

- Ignoring this code can lead to further damage to the engine, reduced performance, and increased fuel consumption.

6. How can I repair OBDII code P120D Ford?

- Repair options include replacing the faulty fuel injector on Bank 2, cleaning or replacing the fuel filter, and addressing any fuel system leaks.

7. Is it safe to continue driving with OBDII code P120D Ford present?

- It is not recommended to continue driving with this code present, as it can lead to more severe engine issues over time.

8. Can a professional mechanic help me resolve OBDII code P120D Ford?

- Yes, a skilled mechanic can diagnose the exact cause of the code, perform necessary repairs, and clear the code from the vehicle's system.

9. Are there any preventive measures to avoid OBDII code P120D Ford?

- Regularly servicing the fuel system, using high-quality fuel, and addressing any engine performance issues promptly can help prevent this code from occurring.

10. How long does it typically take to resolve OBDII code P120D Ford?

- The time needed to resolve this code can vary depending on the exact cause and extent of the issue, but repairs are usually completed within a few hours to a day.

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