P2433 Lexus Code - Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
Quick Answer
The Secondary Air injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the Engine Control Module (ECM). Common causes include Faulty Pressure Sensor, Pressure Sensor harness is open or shorted, Pressure Sensor circuit poor electrical connection. 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
- P2433 Lexus indicates Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1.
- Common causes
- Common causes include Faulty Pressure Sensor, Pressure Sensor harness is open or shorted, Pressure Sensor circuit poor electrical connection.
- 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 P2433 Lexus Description
The AID drives the ASV and the air pump according to command signals transmitted by the ECM. The pressure sensor detects the pressure in the secondary air passage when the AIR system is ON and OFF, and transmits pressure signal to the ECM.
The AID is not only equipped to drive the pump and valve, but also with a diagnosis function to detect malfunctions in the AIR system circuit.
HINT: As a large current is required to drive the air pump and ASV, an AID has been added to the previous system.
What are the Possible Causes of the DTC P2433 Lexus?
- Faulty Pressure Sensor
- Pressure Sensor harness is open or shorted
- Pressure Sensor circuit poor electrical connection
How to Fix the DTC P2433 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 P2433 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 P2433 Lexus code?
Need more information on how to fix the P2433 Lexus code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2433 Lexus code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2433 Lexus Code
1. What does OBDII code P2433 mean on a Lexus?
P2433 indicates an issue with the Secondary Air Injection System Air Flow/Pressure Sensor Circuit High on Bank 1, meaning the sensor is reporting unusually high voltage or pressure readings.
2. What are the symptoms of code P2433 on a Lexus?
Common symptoms include the check engine light turning on, reduced engine performance, poor fuel efficiency, and potential rough idling during cold starts.
3. What causes the P2433 code on a Lexus?
Possible causes include a faulty air flow/pressure sensor, damaged or corroded wiring, a malfunctioning secondary air injection pump, or blockages in the air injection system.
4. Can I drive my Lexus with the P2433 code?
While it may be possible to drive with this code, it’s not recommended as it can affect engine performance and emissions, potentially leading to further damage.
5. How do I diagnose the P2433 code on my Lexus?
Start by inspecting the air flow/pressure sensor and related wiring for damage or corrosion, checking for blockages in the secondary air injection system, and testing the air injection pump for proper operation.
6. How do I fix the P2433 code on a Lexus?
Repairs may involve replacing the faulty air flow/pressure sensor, repairing damaged wiring or connections, cleaning blockages in the air injection system, or replacing the secondary air injection pump.
7. How much does it cost to fix the P2433 code on a Lexus?
Repair costs can vary depending on the issue, ranging from $150 to $500 or more for parts and labor, depending on whether the sensor, pump, or wiring needs replacement.
8. What is the secondary air injection system's purpose on a Lexus?
The secondary air injection system helps reduce emissions by injecting fresh air into the exhaust stream to facilitate the catalytic converter’s operation during cold starts.
9. Can a clogged air injection system trigger the P2433 code?
Yes, blockages in the air injection system can cause abnormal pressure readings, leading to the P2433 code being set.
10. Will clearing the P2433 code fix the issue on my Lexus?
Clearing the code will remove it temporarily, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for P2433 Lexus OBDII Code
Code P2433 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.
