P1423 Code - Secondary Air Injection System Bank 1 Insufficient Flow Detected
Quick Answer
P1423 indicates Secondary Air Injection System Bank 1 Insufficient Flow Detected. Common causes include Secondary Air Injection Valve, Secondary Air Injection Pump, Disconnected Secondary Air Injection hose. 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
- P1423 indicates Secondary Air Injection System Bank 1 Insufficient Flow Detected.
- Common causes
- Common causes include Secondary Air Injection Valve, Secondary Air Injection Pump, Disconnected Secondary Air Injection hose.
- 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.
Code P1423 Description
What are the Possible Causes of the DTC P1423?
- Secondary Air Injection Valve
- Secondary Air Injection Pump
- Disconnected Secondary Air Injection hose
How to Fix the DTC P1423?
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 P1423 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 P1423 code?
Need more information on how to fix the P1423 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1423 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1423 Audi — Bank 1 Secondary Air Injection System Output Too Small
- P1423 BMW — Secondary Air Injection System Bank 1 Insufficient Flow Detected
- P1423 Buick — Intake Air High Pressure Switch Circuit High Voltage
- P1423 Cadillac — Intake Air High Pressure Switch Circuit High Voltage
- P1423 Chevrolet — Intake Air High Pressure Switch Circuit High Voltage
- P1423 GMC — Intake Air High Pressure Switch Circuit High Voltage
- P1423 Lexus — Fuel Tank Gross Leak
- P1423 Subaru — EVAP Vent Control High Input
- P1423 Toyota — Fuel Tank Gross Leak
- P1423 Volkswagen — Bank 1 Secondary Air Injection System Output Too Small
Frequently Asked Questions about P1423 Code
1. What are the common symptoms of OBDII code P1423 (Secondary Air Injection System Bank 1 Insufficient Flow Detected)?
- Common symptoms include the illumination of the check engine light, rough idling, reduced engine performance, and potential increase in emissions.
2. What are the possible causes of OBDII code P1423?
- Possible causes include a malfunctioning secondary air injection pump, clogged or blocked secondary air injection hoses, faulty check valves, or issues with the air injection system's electrical components.
3. How can I diagnose the cause of OBDII code P1423?
- Diagnosis typically involves inspecting the secondary air injection system components for damage, checking for vacuum leaks, testing the functionality of the air pump, and using a scan tool to gather data from the vehicle's onboard computer.
4. Can I continue driving my vehicle with OBDII code P1423?
- It is not recommended to continue driving your vehicle with this code as it may lead to further damage to the engine or emissions system. It is best to address the issue promptly.
5. How can I repair OBDII code P1423?
- Repair options may include replacing a faulty secondary air injection pump, cleaning or replacing clogged hoses, repairing or replacing malfunctioning check valves, or addressing any electrical issues in the air injection system.
6. Are there any DIY tips for fixing OBDII code P1423?
- DIY tips may include visually inspecting the secondary air injection system for obvious signs of damage, checking for loose or disconnected hoses, and ensuring all electrical connections are secure before seeking professional help if needed.
7. Can a faulty oxygen sensor trigger OBDII code P1423?
- While a faulty oxygen sensor is not a direct cause of P1423, it may contribute to improper air-fuel mixture ratios, which can indirectly affect the performance of the secondary air injection system.
8. Is OBDII code P1423 a serious issue?
- OBDII code P1423 should not be ignored as it can lead to decreased engine performance, increased emissions, and potential damage to the catalytic converter if left unresolved.
9. How long does it typically take to repair OBDII code P1423?
- The repair time for P1423 can vary depending on the exact cause of the issue, but it may take a few hours to a day for diagnosis and repair by a qualified mechanic.
10. Does resetting the check engine light make OBDII code P1423 go away?
- Resetting the check engine light may temporarily make the light go away, but it will not fix the underlying issue causing OBDII code P1423. It is important to address the root cause of the problem to prevent further issues.
Discuss the causes and fixes for P1423 OBDII Code
Code P1423 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
