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P14A7 Nissan Code - Charge Air Cooler Cooling Electric Water Pump

Quick Answer

The diagnostic code P14A7 refers to an issue with the Charge Air Cooler (CAC) Cooling Electric Water Pump, a critical component in the vehicle's intercooler system. Common causes include Charge Air Cooler (CAC) coolant leakageCharge Air Cooler coolant is mixed in airProtection control is activated during pump idle runningFaulty Charge Air Cooler Cooling Electric Water PumpElectrical issues, such as damaged wiring or poor connections to the pump. 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
P14A7 Nissan indicates Charge Air Cooler Cooling Electric Water Pump.
Common causes
Common causes include Charge Air Cooler (CAC) coolant leakageCharge Air Cooler coolant is mixed in airProtection control is activated during pump idle runningFaulty Charge Air Cooler Cooling Electric Water PumpElectrical issues, such as damaged wiring or poor connections to the pump.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 11, 2025
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Code P14A7 Nissan Description

The diagnostic code P14A7 refers to an issue with the Charge Air Cooler (CAC) Cooling Electric Water Pump, a critical component in the vehicle's intercooler system. This electric pump is responsible for circulating coolant through the charge air cooler, which cools the compressed intake air produced by the turbocharger or supercharger before it enters the engine. By maintaining lower temperatures in the intake air, the pump enhances engine performance, efficiency, and reliability. If the air entering the engine is cooler, it is denser, allowing for better combustion and increased power output. The pump's operation is controlled by the Engine Control Module (ECM), which adjusts its speed based on various parameters such as engine load and temperature conditions.
OBDII Code P14A7 Nissan - Charge Air Cooler Cooling Electric Water Pump
P14A7 Nissan Code - Charge Air Cooler Cooling Electric Water Pump

Common Causes of P14A7 Nissan

  1. Charge Air Cooler (CAC) coolant leakage
  2. Charge Air Cooler coolant is mixed in air
  3. Protection control is activated during pump idle running
  4. Faulty Charge Air Cooler Cooling Electric Water Pump
  5. Electrical issues, such as damaged wiring or poor connections to the pump

Symptoms of P14A7 Nissan

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine performance or power loss
  3. Increased turbo lag or sluggish acceleration
  4. Overheating engine or coolant temperature warnings
  5. Unusual noises from the engine bay, particularly during acceleration

How to Fix P14A7 Nissan

  1. Perform a diagnostic scan to confirm the P14A7 code and check for any related codes.
  2. Inspect the Charge Air Cooler and associated hoses for leaks or damage.
  3. Test the Charge Air Cooler Cooling Electric Water Pump for proper operation and electrical integrity.
  4. If faulty, replace the Charge Air Cooler Cooling Electric Water Pump with a new unit.
  5. Clear the diagnostic codes and perform a road test to ensure the issue is resolved and monitor engine performance.

Cost to Fix P14A7 Nissan

The cost to repair a P14A7 code can vary widely depending on the specific vehicle make and model, as well as the labor rates in your area. Typically, parts for a new Charge Air Cooler Cooling Electric Water Pump can range from $100 to $300. Labor costs can range from $80 to $150 per hour, with most shops charging between these rates. Overall, you might expect to pay anywhere from $200 to $600 for parts and labor combined. Dealerships may charge higher, while independent shops may offer more competitive rates. Always consult with your local mechanic for a precise estimate based on your vehicle's needs.

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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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