Engine-CodesGeneric – P06AA

P06AA Code - PCM/ECM/TCM Internal Temperature 'B' Too High

Quick Answer

The P06AA diagnostic trouble code refers to a problem with the internal temperature of the Powertrain Control Module (PCM), Engine Control Module (ECM), or Transmission Control Module (TCM) being too high. Common causes include Malfunctioning cooling system, High ambient temperatures, Electrical issues within the module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P06AA indicates PCM/ECM/TCM Internal Temperature 'B' Too High.
Common causes
Common causes include Malfunctioning cooling system, High ambient temperatures, Electrical issues within the module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P06AA Description

The P06AA diagnostic trouble code refers to a problem with the internal temperature of the Powertrain Control Module (PCM), Engine Control Module (ECM), or Transmission Control Module (TCM) being too high. The PCM/ECM/TCM is a crucial component in the vehicle's operation, responsible for controlling various functions such as engine performance, transmission shifting, and emissions systems. When the internal temperature of these modules becomes too high, it can lead to malfunctions and potentially affect the overall performance of the vehicle.

OBDII Code P06AA - PCM/ECM/TCM Internal Temperature 'B' Too High
P06AA Code - PCM/ECM/TCM Internal Temperature 'B' Too High

Common Causes of P06AA

  1. Malfunctioning cooling system
  2. High ambient temperatures
  3. Electrical issues within the module
  4. Excessive heat from the engine or transmission
  5. Clogged air intake or exhaust system

Symptoms of P06AA

  1. Check Engine Light illuminated on the dashboard
  2. Engine running hotter than usual
  3. Transmission shifting irregularly
  4. Reduced fuel efficiency
  5. Engine stalling or misfiring

How to Fix P06AA

  1. Check and repair the cooling system: Inspect the radiator, cooling fan, thermostat, and coolant levels to ensure proper cooling of the PCM/ECM/TCM.
  2. Inspect and replace faulty electronic components: Check for any damaged wiring, connectors, or sensors within the module and replace as needed.
  3. Address any engine or transmission overheating issues: Repair any leaks, replace worn components, and ensure proper airflow to prevent excessive heat buildup.
  4. Clear the code and reset the PCM/ECM/TCM: Once the underlying issue is resolved, clear the trouble code and reset the module to see if the problem persists.
  5. Test drive the vehicle: After repairs are completed, test drive the vehicle to ensure that the symptoms associated with the code have been resolved.

Cost to Fix P06AA

The cost of repairing a P06AA code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnosis time and labor rates at auto repair shops can fluctuate, so it's recommended to obtain a few quotes from different shops to get a more accurate estimate. Additionally, the cost may be higher if any electronic components within the PCM/ECM/TCM need to be replaced.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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