Dodge DTC P1477 – Too Much Secondary Air
DTC P1477 meaning on Dodge
DTC P1477 on a Dodge vehicle indicates that there is too much secondary air being injected into the exhaust system. This code is specific to the secondary air injection system, which is responsible for reducing emissions during cold starts by introducing fresh air into the exhaust stream.
Dodge DTC P1477 symptoms
Symptoms of DTC P1477 on a Dodge may include:
- Check Engine Light illuminated
- Decreased engine performance
- Increased emissions
Dodge DTC P1477 causes
Common causes of DTC P1477 on a Dodge include:
- Faulty secondary air injection pump
- Blocked or leaking secondary air injection system hoses
- Malfunctioning secondary air injection system valves
Dodge DTC P1477 seriousness
While DTC P1477 may not cause immediate drivability issues, it can lead to increased emissions and potential long-term engine damage if left unresolved. It is important to address this code promptly to maintain the vehicle’s performance and environmental compliance.
How to diagnose DTC P1477 on Dodge
To diagnose DTC P1477 on a Dodge, a mechanic may perform the following steps:
- Use a scan tool to retrieve the fault code and freeze frame data
- Inspect the secondary air injection system components for damage or leaks
- Test the secondary air injection pump and valves for proper operation
- Check the electrical connections and wiring related to the secondary air injection system
How to fix DTC P1477 on Dodge
To fix DTC P1477 on a Dodge, the following steps may be taken:
- Replace any faulty secondary air injection system components
- Repair or replace damaged hoses in the secondary air injection system
- Clean or replace clogged secondary air injection system valves
- Clear the fault code and reset the Check Engine Light
How to erase DTC P1477 on Dodge
To erase DTC P1477 on a Dodge, the fault code can be cleared using a scan tool that has the capability to reset codes. Once the issue has been addressed and fixed, the code can be cleared, and the Check Engine Light should turn off.
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