Error Code P2605: What It Means & What To Do?

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The trouble code P2605 can be defined as Intake Air Heater “B” Circuit/Open. The intake air heater “B” circuit is being monitored by the engine control module. This trouble code would be set by the ECM when the intake air heater “B” circuit would not be as per the specifications set by the manufacturer.

The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile. The P2605 error code would get stored when the powertrain control module would detect an irregular voltage reading originating from a certain intake air heater circuit.

What causes this problem with the Intake Air Heater “B” Circuit/Open?

• There can be distorted heater element relay
• Quirks in the heater element
• Faulty temperature sensor
• The intake air heater blower might be damaged
• Broken or restricted air duct
• The blower motor might not be functioning properly
• Some issues related to the PCM

1. Intake Valve – Intake valve is a valve in the cylinder head of an internal-combustion engine that opens at the proper moment in the cycle to allow the fuel-air mixture to be drawn into the cylinder. Thus replace it now!
2. Engine Control Module – It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
3. Intake Manifold - One of the most intriguing components of the internal combustion engine is the intake manifold. Responsible for the even distribution of the air/fuel mixture to each cylinder, the intake manifold also serves as a mount for the carburettors (on older engines) and fuel injectors (on modern engines). Thus, replace damaged parts now!
4. Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus check and replace it, if required.
5. Electronic Control Unit – The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced if found faulty. Thus, buy new ECU modules and components from us!
6. Diagnostic Tool – Make use of quality diagnostic tools to resolve any OBD error code. Buy quality diagnostic tools from us!

Willing to know some common symptoms of OBD Trouble Code P2605? Your wish is our demand. Have a look at them below:

Common Symptoms

• Visibility in the check engine light
• Auto engine will not start
• Extended cranking time
• Irregular idle at cold temperatures
• The car engine might start stalling

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2605:

• You must fix the defective intake air heater blower
• Rehabilitate the defaults in the powertrain control module
• Carefully adjust the faults in the wires or other electrical components
• Recondition the non-functioning temperature sensor

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade intake air heater, intake air heater blower, heater element relay, air duct, blower motor, powertrain control module, digital voltmeter, intake air temperature sensor, intake air heater relay, body control module, pcm, ecm and a lot more for our precious customers.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

It is essential to consult your vehicle information source for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. If you find the appropriate TSB, it may yield helpful diagnostic information. The intake air heating circuit may not work automatically if the ambient air or engine temperature is above the limit which is set by the

manufacturer. The circuit should activate if it is commanded "ON" with a scanner, or if power is applied manually.

Have a look at some basic steps

Inspect the heater element, is it turning "ON" NOTE: Do not touch element or heat shield. Make sure to examine the blower motor, is it turning "ON". The circuit connections and wiring for obvious defects should be visually inspected. It is essential to visually inspect the condition of the air ducts for obvious defects. Examine electrical connections for security and corrosion

Have a look at some advanced steps

The advanced steps become very vehicle specific and need the appropriate advanced equipment to perform in the right way. There would be a need of a digital multimeter and the specific technical references to carry out this procedure. Voltage requirements will vary depending upon the specific year, make and model of the vehicle.

Have a look at some specific checks

Specific checks should be performed by utilizing the troubleshooting guidelines for the particular vehicle using the technical manual or online reference material. These steps would guide you through the process of inspecting the power and ground to each component within the intake air heater circuit in the proper sequence. If the voltage is right to a component that is not functioning, then it would mean that the part is most likely faulty and it should be restored. If power is not available to operate the circuit, continuity checks would be required to identify defective wiring or components.

Common Mistakes When Diagnosing The P2605 Code

There are a lot of mechanics who would simply rush into the judgement that the intake air heater is faulty, but they should keep in mind that the repair might have a temporary effect, but then this error code would return again. It is essential to test each and every possibility for why the component is not working properly to make sure it is fixed properly the first time.