AutoCodes – Generic – P2433

P2433 Code - Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1

Quick Answer

The Secondary Air Injection (AIR) System aids in the reduction of hydrocarbon exhaust emissions during a cold start-up. Common causes include Faulty AIR Pressure Sensor, AIR Pressure Sensor harness is open or shorted, AIR 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 indicates Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1.
Common causes: Common causes include Faulty AIR Pressure Sensor, AIR Pressure Sensor harness is open or shorted, AIR 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.

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Code Popularity 30,611

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2433 Description

The Secondary Air Injection (AIR) System aids in the reduction of hydrocarbon exhaust emissions during a cold start-up. This occurs when the start-up engine coolant temperature (ECT) is between 5-50°C (41-122°F), and the intake air temperature (IAT) is between 5-60°C (41-140°F). The AIR pump operates 5-60 seconds after start-up.
The Powertrain Control Module (PCM) activates the AIR system by simultaneously supplying grounds to the AIR pump and the AIR valve relays. This action closes the relays' internal contacts. The AIR pump and the AIR control solenoid valve/pressure sensor assembly are in turn energized, the pump runs and the control/shut-off valve opens.
The AIR pump sends pressurized fresh air into the pipes/hoses through the open control/shut-off valve, and into the exhaust manifold. The extra air accelerates the catalyst operation, helping it to reach operating temperature faster. The AIR pump remains ON for a short period of time after the control/shut-off valve is commanded OFF. When the AIR pump is commanded OFF it will not run or be activated until the next vehicle start. When the AIR system is inactive, the closed AIR control/shut-off valve prevents air/exhaust flow in either direction.
The AIR system pressure sensor is used to monitor pressure at the AIR control solenoid valve/pressure sensor assembly inlet during the commanded ON/OFF states.

OBDII Code P2433 - Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1 - AutoCodes.com — P2433 Code - Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1

What does this mean?

What are the Possible Causes of the DTC P2433?

Faulty AIR Pressure Sensor
AIR Pressure Sensor harness is open or shorted
AIR Pressure Sensor circuit poor electrical connection

How to Fix the DTC P2433?

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 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 code?

Need more information on how to fix the P2433 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2433 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2433 Audi — Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit High
P2433 Buick — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Cadillac — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Chevrolet — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Dodge — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 GMC — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Lexus — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Pontiac — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Saturn — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Scion — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Toyota — Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2433 Volkswagen — Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit High

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 P2433 Code

1. What are the common symptoms of OBDII code P2433?

- Common symptoms include the check engine light coming on, reduced engine performance, rough idling, and potential misfires.

2. What are the possible causes of OBDII code P2433?

- Possible causes include a faulty secondary air injection system air flow/pressure sensor, damaged wiring or connectors in the sensor circuit, or a problem with the secondary air injection system pump.

3. How can I diagnose OBDII code P2433?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the secondary air injection system components, and testing the sensor for proper operation.

4. Can driving with OBDII code P2433 cause further damage to my vehicle?

- It is recommended to address the issue promptly to prevent potential damage to other engine components and ensure proper vehicle performance.

5. What repairs are typically needed for OBDII code P2433?

- Repairs may involve replacing the faulty secondary air injection system air flow/pressure sensor, repairing damaged wiring or connectors, or addressing issues with the secondary air injection system pump.

6. How much does it usually cost to repair OBDII code P2433?

- The cost of repair can vary depending on the specific issue causing the code, the labor rates in your area, and whether you opt for OEM or aftermarket parts. It's best to consult a mechanic for an accurate estimate.

7. Are there any DIY tips for troubleshooting OBDII code P2433?

- DIY tips may include visually inspecting the sensor and its connections for any obvious damage, checking the sensor's resistance with a multimeter, and ensuring the secondary air injection system components are functioning properly.

8. Can OBDII code P2433 be triggered by a loose gas cap?

- While a loose gas cap can trigger a different code related to the EVAP system, it is not typically associated with OBDII code P2433 specific to the secondary air injection system.

9. Is it safe to continue driving with OBDII code P2433?

- It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential engine damage and ensure optimal performance.

10. How often does OBDII code P2433 occur in vehicles?

- OBDII code P2433 related to the secondary air injection system air flow/pressure sensor circuit high bank 1 is not as common as some other codes, but it can still occur in vehicles equipped with this system.