AutoCodes – Dodge – P1477 Dodge

P1477 Dodge Code - Too Much Secondary Air Injected

Quick Answer

With the engine warm-up completed, engine running in closed loop, the Powertrain Control Module (PCM) detects that too much secondary air was injected during the test period. Common causes include Blockage in system, Defective Oxygen Sensor. 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 Blockage in system, Defective Oxygen Sensor.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 11,820

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 Aug 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1477 Dodge Description

With the engine warm-up completed, engine running in closed loop, the Powertrain Control Module (PCM) detects that too much secondary air was injected during the test period. Check for loose, broken or miss-routed vacuum hoses. Refer to Monitor Test, code repair chart to test this code.

OBDII Code P1477 Dodge - Too Much Secondary Air Injected - AutoCodes.com — P1477 Dodge Code - Too Much Secondary Air Injected

What does this mean?

What are the Possible Causes of the DTC P1477 Dodge?

Blockage in system
Defective Oxygen Sensor

How to Fix the DTC P1477 Dodge?

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 P1477 Dodge 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 P1477 Dodge code?

Need more information on how to fix the P1477 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1477 Dodge 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 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.