AutoCodes – Lexus – P2445 Lexus

P2445 Lexus Code - Secondary Air Injection System Pump Stuck Off Bank 1

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: P2445 Lexus indicates Secondary Air Injection System Pump Stuck Off Bank 1.
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.

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Code Popularity 18,781

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 Jul 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2445 Lexus Description

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. The secondary air is supplied by the air pump and it is pumped to the exhaust manifold through the air switching valve. Open and close movement of the air switching valve is regulated by the Vacuum Switching Valve (VSV).The air pump and the air switching valve are observed by the Engine Control Module (ECM) and are used to detect malfunction in this system. The ECM monitors the secondary air injection system and detects malfunction using a pressure sensor located on the air switching valve.
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.

OBDII Code P2445 Lexus - Secondary Air Injection System Pump Stuck Off Bank 1 - AutoCodes.com — P2445 Lexus Code - Secondary Air Injection System Pump Stuck Off Bank 1

What does this mean?

What are the Possible Causes of the DTC P2445 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 P2445 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 P2445 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 P2445 Lexus code?

Need more information on how to fix the P2445 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2445 Lexus Code

1. What does the OBDII code P2445 mean for a Lexus?

P2445 indicates that the secondary air injection system pump is stuck off on Bank 1, meaning itâ€™s not functioning as required to reduce emissions during cold starts.

2. What are the common symptoms of a P2445 code in a Lexus?

Symptoms include the check engine light turning on, rough engine starts, reduced performance during cold starts, or failing an emissions test.

3. What causes the P2445 code on a Lexus?

Common causes include a faulty air pump, damaged air pump relay, clogged air injection valves, electrical wiring issues, or excessive moisture in the pump.

4. Can I drive my Lexus with a P2445 code?

While the vehicle can still be driven, ignoring the code may lead to increased emissions, poor engine performance during cold starts, or additional damage to the air injection system.

5. How is the P2445 code diagnosed in a Lexus?

A mechanic will use an OBDII scanner to confirm the code, inspect the air pump and related components, check for electrical issues, and test the air injection valves for proper operation.

6. How do you fix the P2445 code on a Lexus?

Repairs may involve replacing the air injection pump, cleaning or replacing clogged valves, fixing damaged wiring, or replacing a faulty relay.

7. What is the role of the secondary air injection pump in a Lexus?

The secondary air injection pump helps reduce emissions by injecting fresh air into the exhaust system during cold starts, aiding in catalytic converter efficiency.

8. What does Bank 1 refer to in the P2445 code?

Bank 1 refers to the side of the engine that contains cylinder 1, typically the side where the engine intake manifold is located.

9. How much does it cost to repair a P2445 code in a Lexus?

Repair costs can vary, but replacing the air injection pump typically costs between $300 and $1,200, depending on parts and labor rates.

10. Can a clogged air injection valve cause the P2445 code in a Lexus?

Yes, a clogged or stuck air injection valve can restrict airflow, leading to the air pump being unable to function properly and triggering the P2445 code.