P2446 Lexus Code - Secondary Air Injection System Pump Stuck On Bank 2
Quick Answer
To accelerate the activation of catalyst when warming up the engine, the air injection system pumps the secondary air to the exhaust manifold by pressure. Common causes include Air pump fuse, Vacuum hose, Air pump assembly. 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
- P2446 Lexus indicates Secondary Air Injection System Pump Stuck On Bank 2.
- Common causes
- Common causes include Air pump fuse, Vacuum hose, Air pump assembly.
- 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 P2446 Lexus Description
The ECM observes the pressure in the secondary air passage using the pressure sensor located on the air switching valve in the secondary air injection system. The sensor detects an exhaust pressure in the secondary air passage.
What are the Possible Causes of the DTC P2446 Lexus?
- Air pump fuse
- Vacuum hose
- Air pump assembly
- Faulty Pressure Sensor
- Air pump harness is open or shorted
- Air pump circuit poor electrical connection
- Pressure Sensor harness is open or shorted
- Pressure Sensor circuit poor electrical connection
How to Fix the DTC P2446 Lexus?
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 P2446 Lexus 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 P2446 Lexus code?
Need more information on how to fix the P2446 Lexus code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2446 Lexus code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2446 Lexus Code
1. What are the common symptoms of OBDII code P2446 in a Lexus related to the Secondary Air Injection System Pump on Bank 2?
Common symptoms include the illumination of the check engine light, rough idling, decreased engine performance, and potential misfiring.
2. What are the possible causes of OBDII code P2446 in a Lexus indicating the Secondary Air Injection System Pump is stuck on Bank 2?
Potential causes include a faulty secondary air injection pump, damaged or broken pump relay, clogged air passages, or an electrical issue in the pump circuit.
3. How can I diagnose the OBDII code P2446 in a Lexus for the Secondary Air Injection System Pump on Bank 2?
Diagnosis involves using an OBDII scanner to retrieve the code, checking the secondary air injection system components for physical damage, and testing the pump operation and related electrical connections.
4. Can I continue driving my Lexus with OBDII code P2446 indicating a stuck Secondary Air Injection System Pump on Bank 2?
While it may be possible to drive the vehicle with this code, it is not recommended as it can lead to poor engine performance and potential damage. It is best to address the issue promptly.
5. How can I repair OBDII code P2446 in a Lexus related to the Secondary Air Injection System Pump on Bank 2?
Repair options may include replacing the faulty pump, repairing or replacing damaged wiring or connectors, clearing any obstructions in the air passages, or resetting the system after fixing the issue.
6. Is it possible to reset the check engine light after repairing OBDII code P2446 in a Lexus?
Yes, the check engine light can be reset using an OBDII scanner after the underlying issue triggering the code has been successfully repaired.
7. Can a DIY enthusiast fix OBDII code P2446 in a Lexus indicating a stuck Secondary Air Injection System Pump on Bank 2?
Depending on the individual's mechanical skills and access to tools, some DIY enthusiasts may be able to address this issue. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.
8. How long does it typically take to repair OBDII code P2446 in a Lexus linked to the Secondary Air Injection System Pump on Bank 2?
The repair time can vary based on the exact cause of the issue, the extent of the repair needed, and the availability of parts. It can range from a few hours to a full day in some cases.
9. Are there any preventive maintenance tips to avoid encountering OBDII code P2446 in a Lexus due to the Secondary Air Injection System Pump on Bank 2?
Regularly inspecting and maintaining the secondary air injection system components, cleaning air passages, and promptly addressing any issues with the system can help prevent the occurrence of this code.
Discuss the causes and fixes for P2446 Lexus OBDII Code
Code P2446 Lexus 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.
