Engine-CodesDodge – P1477 Dodge

P1477 Dodge Code - Too Much Secondary Air Injected

Quick Answer

The P1477 code for Dodge vehicles indicates that there is an issue with the amount of secondary air being injected into the engine. Common causes include Faulty secondary air pump, Stuck open or closed secondary air valve, Leaks in the secondary air injection system. 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
P1477 Dodge indicates Too Much Secondary Air Injected.
Common causes
Common causes include Faulty secondary air pump, Stuck open or closed secondary air valve, Leaks in the secondary air injection system.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1477 Dodge Description

The P1477 code for Dodge vehicles indicates that there is an issue with the amount of secondary air being injected into the engine. Secondary air injection systems are designed to reduce harmful emissions by introducing fresh air into the exhaust system, which helps to burn any unburned fuel before it exits the tailpipe. When too much secondary air is injected, it can disrupt the air-fuel mixture in the engine, leading to potential performance issues and increased emissions.

OBDII Code P1477 Dodge - Too Much Secondary Air Injected
P1477 Dodge Code - Too Much Secondary Air Injected

Common Causes of P1477 Dodge

  1. Faulty secondary air pump
  2. Stuck open or closed secondary air valve
  3. Leaks in the secondary air injection system
  4. Electrical issues such as faulty wiring or connectors

Symptoms of P1477 Dodge

  1. Rough idling or unstable engine performance
  2. Decreased fuel efficiency
  3. Stalling or hesitation during acceleration
  4. Check engine light illuminated on the dashboard

How to Fix P1477 Dodge

  1. Diagnose the specific cause of the P1477 code using a scan tool to pinpoint the issue within the secondary air injection system.
  2. Inspect the secondary air pump, valves, and hoses for any signs of damage or leaks.
  3. Test the electrical connections and wiring to ensure they are functioning correctly.
  4. Replace any faulty components such as the air pump, valves, or hoses as needed.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1477 Dodge

The typical repair costs for addressing a P1477 code can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as the vehicle make and model, location, and engine type can also impact the final repair costs. It's recommended to consult with a qualified mechanic to get an accurate estimate for addressing this issue.

When is the Code Detected?

The Powertrain Control Module (PCM) detected too little injected air during the secondary air injection monitor test

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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 P1477 Dodge Code

1. What are common symptoms of OBDII code P1477 in a Dodge related to "Too Much Secondary Air Injected"?

The common symptoms include rough idling, engine misfires, and decreased fuel efficiency.

2. What can cause the OBDII code P1477 "Too Much Secondary Air Injected" in a Dodge?

Possible causes include a faulty secondary air injection system, a malfunctioning air pump, or issues with the air injection control circuit.

3. How can I diagnose the OBDII code P1477 on my Dodge?

Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the secondary air injection components for any visible damage, and testing the air pump and control circuit for proper operation.

4. What are the repair options for fixing OBDII code P1477 in a Dodge?

Repair options may include replacing a faulty air pump, repairing the wiring in the air injection control circuit, or cleaning or replacing the secondary air injection components.

5. Can driving with the OBDII code P1477 in a Dodge cause further damage?

Continued driving with this code may lead to increased emissions, potential damage to the catalytic converter, and decreased engine performance over time.

6. How much does it typically cost to repair OBDII code P1477 in a Dodge?

The cost of repairs can vary depending on the specific issue causing the code, but it may range from $200 to $800 at a dealership or repair shop.

7. Are there any DIY repair tips for addressing OBDII code P1477 in a Dodge?

DIY enthusiasts with automotive repair experience may attempt to visually inspect the components and connections of the secondary air injection system before deciding on any repair actions.

8. Is it safe to drive my Dodge with the OBDII code P1477 present?

While the vehicle may still be operational with this code, it is recommended to address the issue promptly to prevent potential damage to other components and ensure optimal engine performance.

9. Can resetting the OBDII code P1477 in a Dodge resolve the issue temporarily?

Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the excessive secondary air injection.

10. How important is it to address the OBDII code P1477 "Too Much Secondary Air Injected" in a Dodge?

Addressing this code promptly is essential to maintain the proper functioning of the emission control system, ensure optimal engine performance, and prevent potential damage to other engine components.

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