P2433 Fault Code
P2433 OBD-II Trouble Code Short Description
Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
What does trouble code P2433 mean?
The P2433 fault code is triggered when the Engine Control Module (ECM) detects a high voltage or an abnormal signal from the Secondary Air Injection System Air Flow/Pressure Sensor on Bank 1. This system is responsible for reducing emissions by introducing air into the exhaust stream during cold starts, helping to burn off excess hydrocarbons. If the sensor detects pressure or airflow that is outside the normal range, it can lead to increased emissions and potential performance issues.
Symptoms
What are the symptoms of the P2433 code?
- Check Engine Light (CEL) illumination
- Poor engine performance
- Increased emissions during inspection
- Potential rough idle or stalling, especially during cold starts
Causes
What causes the P2433 code?
- Faulty air flow/pressure sensor
- Wiring issues, such as a short circuit or poor connection
- Vacuum leaks in the system
- Malfunctioning secondary air injection pump
- Blockage in the air injection system
Possible Solutions
How to fix P2433?
- Inspect and test the secondary air injection system components
- Check for proper voltage and ground at the sensor connector
- Replace faulty air flow/pressure sensor if necessary
- Repair or replace damaged wiring or connectors
- Ensure there are no vacuum leaks in the system
- Clear the trouble codes and perform a test drive to verify repairs