Error Code P2449: What It Means & What To Do?

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The trouble code P2449 can be explicated as Secondary Air Injection System High Airflow Bank 2. If the engine control module would detect a variation in the voltage coming from the secondary air injection system delivered performance that is outside the parameters set by the automobile manufacturer, then it would store the P2449 fault code. This would give rise to the flashing up of the check engine light.

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. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

What causes this problem with the Secondary Air Injection System High Air Flow Bank 2?

• Leakages in the secondary air system air flow sensor
• The air flow sensor might be flawed
• Air flow sensor harness is not shut or tiny
• There might be poor electrical connection in the air flow sensor circuit

1. Exhaust System Parts - You are likely to notice smoke coming out of the system if you don’t change your exhaust system parts right away when they are diagnosed as defective. This is harmful not only for the system but also for the plastic parts located nearby. Parts Avatar is just the right place for you that offers the excellent quality products at the prices you have always been looking for.
2. Air Injection Check Valve - Valves can be damaged and can cause wrong air flow in the injection system. Buy quality air injection check valve now!
3. Engine Control Module - Want to know the most common reason behind the failure in the engine control module? Corrosion or damage because of moisture can cause ECM failure. Corrosion might enter the ECM through the wiring harness and moisture can enter by a failure in the seals in the ECM itself.
4. Powertrain Control Module - The PCM makes the engine and transmission work in tandem. Any issue with the powertrain control module will cause major problems with the efficient running of the vehicle.
5. Air Control Valve Relay - Check for faults in the valve relay and replace it immediately. Buy new relay from us!
6. Air Injection Pump - OBD code P2449 can occur due to faulty air pump leading to water entering the system. Replace faulty pumps now!
7. Electronic Control Unit - If your vehicle fails to start for no apparent reason, this is also a good indicator that there can be some issues with the ECU. If you check the car battery, starter and other common electrical components, and the vehicle still does not start, a quirky electronic control unit should be the next logical thing to consider.
8. Diagnostic Tool - In order to fix these errors, you need few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come handy to do so and resolve all your vehicle problems. Visit today!

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• Make sure to mend the faulty air flow sensor
• Repair or replace the quirky air pump
• Rehabilitate the defaults in the air flow sensor harness
• The air flow sensor circuit should be restored to working order
• Recondition the non-functioning air pump check valve

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

• This is a general type of error code which is diagnosed with the help of a scanner.
• The mechanic will insert a scanner to diagnostic port of the vehicle and recover the codes and freeze frame data.
• If he happens to find any additional error codes, he has to address them as well.
• Scans codes and freeze frame data in order to verify the problem and check if the code is really present.
• Clear the code and retest the vehicle under similar conditions to see if the error reappears.
• Visually inspect all the associated wiring for the air injection system and repair as necessary.
• After clearing the code, a test drive will reveal if the P2449 returns immediately.
• If it doesn’t, the issue could be intermittent or temperature dependent. If it does return, a fuse may be blown and your mechanic will check that next.
• If the fuse is fine, chances are high the pump itself is defective and will need to be replaced.
• Check PCM for faults and replace or reprogram as required.

Common Mistakes When Diagnosing The P2449 Code

• There are a number of technicians which simply replace the secondary air injection pump without fabricating a water drain on the pump housing which might lead to repeated pump failure.
• One another essential thing which the mechanics should keep in mind is to check valves properly.

P2448 - Secondary Air Injection System High Air Flow Bank 1