AutoCodes – Chrysler – P1477 Chrysler

P1477 Chrysler 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 Chrysler 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.

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Code Popularity 2,880

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

What does this mean?

What are the Possible Causes of the DTC P1477 Chrysler?

Blockage in system
Defective Oxygen Sensor

How to Fix the DTC P1477 Chrysler?

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 Chrysler 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.

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

Need Help with the Code?

Get the P1477 Chrysler 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 Chrysler Code

1. What are the common symptoms of OBDII code P1477 in a Chrysler vehicle?

- Common symptoms include rough idle, engine hesitation, decreased fuel efficiency, and potential stalling.

2. What is the likely cause of OBDII code P1477 indicating "Too Much Secondary Air Injected" in a Chrysler vehicle?

- The most common cause is a malfunctioning secondary air injection system, often due to a faulty air pump or a leak in the system.

3. How can I diagnose the source of the OBDII code P1477 in my Chrysler vehicle?

- You can use a scan tool to check the secondary air injection system components, including the air pump, hoses, valves, and sensors, for any issues or malfunctions.

4. Can a clogged air filter trigger the OBDII code P1477 in a Chrysler vehicle?

- Yes, a clogged air filter can disrupt the proper functioning of the secondary air injection system, potentially leading to the triggering of code P1477.

5. What are some repair tips for fixing OBDII code P1477 in a Chrysler vehicle?

- Start by inspecting the secondary air injection system components for any visible damage or leaks. Replace any faulty parts and clear the code to see if the issue is resolved.

6. Is it safe to continue driving my Chrysler vehicle with the OBDII code P1477 present?

- It is not recommended to drive with the code active, as it can lead to further engine damage or performance issues. It's best to address the underlying problem promptly.

7. Can a loose or damaged vacuum hose cause the OBDII code P1477 to appear in a Chrysler vehicle?

- Yes, a loose or damaged vacuum hose connected to the secondary air injection system can disrupt the air flow and trigger code P1477.

8. How much does it typically cost to repair OBDII code P1477 in a Chrysler vehicle?

- The cost of repairs can vary depending on the exact cause of the issue and the labor rates in your area. It's advisable to get a diagnostic done to determine the precise repair needed.

9. Will resetting the OBDII code P1477 in my Chrysler vehicle make it go away permanently?

- Resetting the code without addressing the underlying issue will not resolve the problem. It's crucial to diagnose and repair the root cause to prevent the code from reappearing.

10. Can a faulty oxygen sensor be a possible reason for the OBDII code P1477 in a Chrysler vehicle?

- Yes, a faulty oxygen sensor can contribute to an imbalance in the air-fuel mixture, potentially leading to the triggering of code P1477 related to excess secondary air injection.