Guide To P007A OBD Error Code Solutions

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Do you want to know the reason why P007A trouble code is triggering up again and again? The main reasons for this are that there is some sort of fault in the air cooler temperature sensor, defective turbocharger or supercharger and there can also be some issues with the power control module. Take care of all these car parts or else your car may have to face some major issues.

Read this information to know what P007A means. An intercooler is also known as a charge air cooler and it is generally found in turbocharged or supercharged vehicles. It is because of high pressure that the air which is compressed by the turbocharger becomes extremely hot. Now the hot air would start entering the charge air cooler where it cools down. That cool air would then start entering the engine.

What causes this problem with the Charge Air Cooler Temperature Sensor Circuit Bank 1?

• A damaged charge air cooler temperature sensor
• Charge air cooler temperature sensor harness may get opened or shorted
• Bad electrical connection with the charge air cooler temperature sensor circuit
• A defective sensor
• Wiring issues
• Defective or restricted charge air cooler
• Distorted power control module

1. Engine Control Module - Common cause behind this P007A error code can be some fault in Engine control module. So, it will be a good decision to replace them now.
2. Air cooler assembly - A broken Air cooler assembly can cause a lot of issues. It would be nice if you get it replaced on time.
3. Turbocharger - P007A code does not really end up spoiling your engine control module, but it might also accompany few Turbocharger issues. We have best Turbocharger related parts with us.
4. Supercharger - Defective car Supercharger can be a major reason why P007A code depicts. So make sure to replace it online so that you don’t have to face any further issues.
5. Temperature Sensor - Some sort of defects in Temperature Sensor can be a huge reason behind the appearance of P007A code. So, you must get it fixed.
6. Air Cooler Sensor - P007A code flashing? Get your Air Cooler Sensor inspected from a mechanic.
7. Powertrain Control Module - P007A code does not really end up spoiling your timing belt, but it might also accompany few powertrain control module issues. We have best powertrain related parts with us.

It is essential 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 P007A here:

Common Symptoms

• Illumination in the check engine light
• Lack of overall engine performance
• Decrease in the amount of fuel economy
• Vehicle may get stuck in "limp" mode
• Diesel particulate filter regeneration may be inhibited

Have a look at some ways with which you can correct the P007A code:

• Carefully check the reference voltage side of the circuit. You must use a digital Multimeter set to volts to check for a 5-volt reference from the PCM at one of the two charge air cooler temperature sensor terminals. If there is no reference signal, then just connect the meter set to ohms (make sure that the ignition off) between the reference voltage pin on the CACT and the reference voltage pin on the PCM. There is an open circuit between the PCM and the sensor if the meter reads out of limits the it should be located and repaired properly. If a numeric value is read by the meter, then there is continuity.
• If you find out that everything is fine, you'll want to check that there is 5-volts coming out of the PCM at the reference voltage terminal. If there is not a 5-volt reference from the PCM, the PCM is probably faulty.
• The next step is to inspect the ground side of the circuit. Just connect the meter set to ohms between the ground terminal on the charge air cooler temperature sensor and the ground terminal on the PCM. If by any chance the meter reads out of limits (OL), then there is surely an open circuit between the PCM and sensor. This must be located and repaired. There is continuity if any numeric value is read by the meter. Finally, you have to check that the PCM has a good ground. You can do this by attaching one-meter lead to the PCM ground terminal and the other one to chassis ground. Now again if the results of the meter are out of limits, then there is surely an open circuit between the PCM and the ground that should be carefully located and then repaired.

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Visually inspect of the charge air cooler temperature sensor as well as the wiring. There can be some loose connections and damaged wiring which should be looked upon. You can also inspect the charge air cooler and ducting. If damage is found, repair as necessary, clear the code and then check if the code is returning back or not.

• The first thing which you have to do is preliminary circuit testing. Use a scan tool which would help you to monitor the charge air coolant temperature sensor data parameter. Then you can disconnect the CACT sensor. Due to this the value of scan tool should drop to a very low value. The next step is to connect a jumper wire across the terminals. If a very high temperature is displayed by the can tools, then the connections are sound and the ECM can recognize the input. This would mean that the issue is with sensor and it is not a circuit and a PCM related issue.
• After that the sensor should be tested. You must disconnect the charge air cooler temperature sensor connector. Then the resistance between the two sensor terminals should be measured with the help of a digital Multimeter. Set it to ohms. Start your car engine and watch the value of the meter. With the warming up of the engine, the values would start decreasing smoothly. If the overall engine temperature rises, but at the same time CACT resistance does not decrease, then there is some issue with the sensor. You must replace the faulty sensor.

Common Mistakes When Diagnosing The P007A Code

• The air temperature failure should be charged
  
• Failure with the Powertrain Control Module
• Some issues with the wiring