P2446 OBD Error Code: Problem & Solutions

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The trouble code P2446 can be explained as Secondary Air Injection System Pump Stuck on Bank 2. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things. The secondary air injection system pump is being monitored by the engine control module. This trouble code would be set by the ECM when the secondary air injection system pump would not be as per the specifications set by the manufacturer.

If you are experiencing noise from under the car’s hood with occasional engine stalling and rich engine conditions and the PCM storing OBD code P2446 error in the system, it is a clear indication of a problematic air injection system. This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the Secondary Air Injection System Pump Stuck on Bank 2?

• Air pump harness might be opened or shorted
• Air pump circuit might have bad electrical connection
• There might be opened or shorted pressure sensor harness
• Poor electrical connection pressure sensor circuit
• Faulty air pump assembly
• Malfunctioning vacuum hose
• There can be inoperative air pump fuse
• Pressure sensor might be flawed

1. Exhaust System Parts - Are you seeing this error code flashing? Well, it could be due to malfunctioning exhaust system parts. In addition to this error code, the driver is likely to experience a noisy engine, decrease in power and acceleration. We strongly recommend you to purchase new exhaust system parts from Parts Avatar.
2. Engine Control Module - ECM faults are rare but can be a big problem as faulty ECM will cause wrong vehicle operations and can also result in wrong OBD codes getting stored in the system which can also cause misdiagnosis. Thus, replace faulty ECM components now!
3. Air Injection Pump - Repair or replace damaged air pump as if affects the emission control of the car. Buy new air pump now!
4. Electronic Control Unit - The ECU coordinates with the temperature sensor to control the blower fan for keeping the battery temperatures under control. So, replace faulty ECU components now!
5. Powertrain Control Module - Check for PCM error which might be due to circuit faults that might require complete replacement and reprogramming. Replace it now!
6. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.
7. Air Intake Hose - Check if the intake hose if damaged or not. If faulty, replace it immediately. Buy new intake hoses form us!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P2446 here:

Common Symptoms

• Appearance of the service engine soon light
• There might be lack of proper engine ventilation
• The car engine might start stalling
• Uncommon noise from the secondary air pump

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• Make sure to mend the faulty wiring and connectors relating to the secondary air pump and pressure sensor circuit
• It is essential to restore the flawed secondary air pump
• Repair or replace the quirky one-way check valves
• Rehabilitate the defaults in the PCM/ECM

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Here are some steps which you should follow in order to diagnose this fault code:

• The first step in diagnosing the P2446 code is to connect an OBD II scanner to the car’s port (usually found under the dash on the driver’s side).
• The stored code or codes will be read, and then cleared. The technician will then test drive the vehicle to see if the code resets, as well as to duplicate any symptoms the driver mentioned.
• The next step is to check the condition of the air injection hoses or lines (some cars use steel lines, while others use rubber hoses).
• Next, the technician will inspect the one-way check valves on the pump. If air moves both ways, then the valve is bad and must be replaced. In some instances, this is all that is needed. However, if sufficient moisture has entered the pump, replacing it as well may be necessary.
• If the check valves test well, then the mechanic will need to check the wiring harness for signs of damage, as well as the connections for corrosion.

Common Mistakes When Diagnosing The P2446 Code

• Many a times the mechanics replace the secondary air injection pump, but before that they should always check and repair the faults in the check valves and water drain.
• Sometimes, it may be the pressure sensor itself that is misreading an otherwise stable air injection pump. There are chances that the P2446 error code starts appearing when there is some fault in the pressure sensor.