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P2432 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Air Flow/Pressure Circuit Low Bank 1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P2432 trouble code is a generic powertrain code related to the auxiliary emissions control system. This particular code appears when the engine control module (ECM) is reading low air pressure to bank 1 of the secondary air injection system.
The P2432 code is also related to:
When a P2432 code appears, the engine control module (ECM) has located an issue with the secondary air injection system’s air flow or pressure sensor circuit. Part of the emissions control system, the secondary air injection system pumps air into the exhaust stream when an engine is cold to help speed up the process of warming the catalytic converter.
Bank 1 contains the engines number one cylinder, and the P2432 code is stating that the air pressure to the secondary air injection system is low.
The P2442 trouble code occurs mostly in cold weather. The injection pump for the secondary air injection system uses a one-way check valve with the air inlet hose for protection. If a one-way check valve goes bad, condensation can enter the pump and possibly freeze. Ice in the pump can cause damage and overload the circuit. If the temperature of the engine exhaust rises to high, it can also cause wires and connectors to overheat and burn.
A P2432 code can be caused by a number of possible issues, including:
Symptoms of a P2432 code may include:
A mechanic may use the following methods to diagnose a P2442 code:
Use an OBD-II scanner to check for any trouble codes, such as P2432, store in the ECM
Check all valves for possible damage and repair or replace as needed
Check all wiring for possible damage and repair or replace as needed
Check the air injection pump for moisture, clean, and test
Check pressure sensor for damage or corrosion from moisture and repair or replace as needed
Check air injection system, including hoses and fuses for damage and repair or replace as needed
Clear all codes and test drive the vehicle to see if they reappear
One of the most common mistakes in diagnosing the P2432 DTC is not checking and diagnosing a potentially faulty one-way check valve. A misdiagnosis could result in multiple replacements of the secondary air injection system and continuing pump failures.
Because your vehicle could stall or hesitate during driving causing dangerous driving conditions, YourMechanic considers the P2432 trouble code a potentially serious issue. Take your vehicle into your local dealer service center or repair shop immediately for diagnosis or repair.
Damaged or faulty one-way check valves are often the cause of this trouble code. YourMechanic recommends checking and testing these valves before making any further repairs, as a damaged one-way check valve can potentially damage other parts of the air injection system.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.