P2602 OBD Error Code: Problem & Solutions

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The trouble code P2602 can be described as Coolant Pump "A" Control Circuit Low. The error code P2602 would start triggering when the PCM would detect some fault in coolant pump "A" control circuit. 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.

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. The P2602 trouble code would indicate that a coolant pump "A" control circuit which is not as per the predetermined limit has been detected by the ECM. Now when this would occur, the fault code would be stored and there would be an illumination of the malfunction indicator light.

What causes this problem with the Coolant Pump "A"Control Circuit Low?

• Defaults in the coolant pump
• Coolant pump harness is open or shorted
• Coolant pump circuit poor electrical connection
• There can be inoperative powertrain control module

1. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
2. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
3. Automatic Transmission Module - If the transmission module is faulty, then the vehicle might experience erratic gear shifts and throttle response. The engine might also stall will accelerating and slowing down. Thus replace faulty automatic transmission module, if required.
4. Fuel Injector - The fuel injectors are an important component of the fuel delivery system that helps in proper utilization of the fuel entering the engine. This not only helps in taking care of the air to fuel ratio in the engine, helping the combustion process but also enhances the performance. Thus, replace faulty injector now!
5. Electronic Control Unit - The ECU is a major component of your car's onboard computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
6. Diagnostic Tools - Take the help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2602 code by mentioning some major symptoms below:

Common Symptoms

• Illumination in the service engine soon light
• Problem of overheat
• Non functional A/C system

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 P2602:

• It is essential to restore the flawed electrical components
• Rehabilitate the defaults in the PCM or CAN bus
• Carefully adjust the faults in the coolant pump control relay
• It is necessary to perform proper service of the unsound ground straps or ground wires

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

• As a first step in any trouble shooting process, you must search the TSB for your specific vehicle by year, model and power plant. This is very essential as it can save a lot of time by directing in the right path.
• After that you should carefully locate the Coolant Pump B (CP-A) on your specific automobile. This pump is generally found mounted to the front of the engine, on top of the engine, inside the wheel wells or against the bulkhead.
• Now once it has been located, then the connector and wiring should be visually inspected. Search for scraping, rubbing, bare wires, burn spots or melted plastic. The connector should be pulled apart and then carefully examine the terminals (the metal parts) inside the connector.
• Check if they are looking burned or have a green tint indicating corrosion. An electrical contact cleaner should be used as well as a plastic bristle brush if cleaning of the terminals is required.
• It should be allowed to dry and then electrical grease should be applied where the terminals contact. The diagnostic trouble codes from memory should be cleared with the help of scan tools and then check if the P2602 code returns. Now if it does not return, then it would mean that there is some fault in the connections.

Common Mistakes When Diagnosing The P2602 Code

• Common mistakes while diagnosing this trouble code are unnecessary and expensive replacements which usually happens when one doesn't follow all the steps carefully.
• The most common mistake while diagnosing this code is missing out on diagnosing steps which further leads to the expensive and unnecessary replacements. It is always recommended to seek the help of experienced diagnostician to avoid any mistakes