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Guide To P00A2 OBD Error Code Solutions

OBD Code P00A2 - Charge Air Cooler Temperature Sensor Circuit Low Bank 2

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If you experience exponential drop in the fuel economy, and your car engine is stalling with improper throttle response and Check Engine Light turned on. It might be an indicative to OBD Code P00A2 error.

This code basically points out the problem with the Air Charge Cooler Sensor and Circuit

Learn More About OBD Error Code P00A2

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Charge Air Cooler Temperature Sensor Circuit Low

 

The Charge Air Cooler Temperature Sensors informs the engine control module (PCM) about the air temperature exiting the charge air cooler assembly. The Charge Air Cooler Assembly cools the air coming out of the turbocharger before it enters into the engine. If the PCM detects an incorrect signal from the Charge Air Cooler Sensor, the PCM will set code P00A2.

 

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

 

  • Fault in the CACT (Charge Air Cooler Temperature Sensor) sensor
  • Damaged wires and connectors of the sensor
  • Faulty Air Cooler circuit
  • Problem in the PCM to interpret the transmitted sensor data

Replace/Repair These Parts To Fix OBD Code P00A2

  1. Turbocharger - Faulty turbocharger won’t be able to force extra air into the combustion chamber. Replace your old turbochargers with us!
  2. Supercharger - Damaged supercharger will not increase the air pressure or density of air supplied to an internal combustion engine, thus reducing engine power. Replace damaged supercharger and parts today!
  3. Air Temperature Sensor - The Air Temperature sensor plays a crucial role in the engine performance. Replace faulty sensor now!
  4. Engine Control Module - Faulty ECM leads to engine stalling or not starting, and check engine lights being on. Replace damaged ECM now!
  5. Intercoolers - A damaged intercooler will not reduce the air temperature and thereby not increasing the density of the air supplied to the engine. Visit us to buy quality intercooler today!
  6. Powertrain Control Module - PCM related issues can hamper the fuel delivery system and engine performance. Find all the Powertrain related parts with us.
  7. Diagnostic Tool - You will need high grade diagnostic tools for correction of the OBD error code which is detected. Visit us today to grab amazing deals.

Symptoms Of OBD Error Code P00A2

Following are the symptoms that indicate the problem with the Air Cooler Temperature sensor and circuit thus flashing of P00A2 error.

 

  • Illumination of Check Engine Light
  • Impacted engine performance due to poor air/fuel ratio and temperature difference
  • Increased fuel consumption
  • Vehicle running in "limp" mode to protect the engine
  • If equipped, the Diesel particulate filter regeneration gets inhibited

How To Correct P00A2 Charge Air Cooler Temperature Sensor Circuit Low Bank 2

Proper scan tools should be used to detect and diagnose the problems related to a particular OBD error code. After testing it is important to check that the error doesn’t reflect back anymore. Some of the common components that account to the major problems of the P00A2 error code and when fixed can fix the problem are:

 

  • Replacement CACT (Charge Air Cooler Temperature Sensor) – This component keeps the check on the temperature of the air entering the engine and coordinated with the ECM specifying the air’s temperature before it enters the engine.
  • Bad wiring to the CACT (Charge Air Cooler Temperature Sensor) can be the first reason for the sensor’s fault and for the Error P00A2 to flash.
  • PCM (Powertrain Control Module) – If all the other tests of the sensor and circuit come out to be perfect, then the PCM should be checked for faults and replaced if necessary.

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Easy Diagnosis Of Engine Error OBD Code P00A2

P00A2 is properly diagnosed with an advanced scan tool capable of factory sensor readings (not just one from an auto parts store). A qualified technician can read the data from the advanced scan tool to determine when the problem occurred, or if it is still occurring. They may clear the code/light and test drive the vehicle while monitoring the scan tool data to see if the fault returns or is present.

 

Based upon the conditions of the test, possibly clearing the code, and road testing the car while monitoring the data, further diagnosis may be required. Diagnosis may require multiple tools such as:

 

  • A technician typically begins by hooking the vehicle up to an OBD-II scanner in order to verify that the code is present, and check for other codes.
  • This data along with freeze frame data is recorded, and the codes are then cleared to see if they reoccur.
  • Next, there should be a visual inspection of the wiring and connectors to check for loose connections, corrosion, or shorts.
  • A specialized tool may be used to test the CACT sensor and circuit. Other tests of the CACT and camshaft components may help pinpoint the problem, as well as data transmission accuracy.
  • If there is no problem found with the sensor and the circuit, then the most probable answer to the problem is a faulty PCM circuit. A PCM consists of the ECM and the transmission control module and can cause great problems with it is unable to interpret the right data from other sensors.

Common Mistakes When Diagnosing OBD Code P00A2


Oftentimes the PCM sensor and circuit is blamed, and replaced, without checking the Charge Air Cooler Sensor and circuit as well as neglecting the damaged wiring and connectors. Because there can be several causes for this code, a complete inspection should be carried out in order to avoid repairs that may be unnecessary and more expensive.

Other Diagnostic Codes Related To OBD Code P00A2

P00A0 - Charge Air Cooler Temperature Sensor Circuit Bank 2

P00A1 - Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 2

P00A3 - Charge Air Cooler Temperature Sensor Circuit High Bank 2

P00A4 - Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 2