Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the pump that cools the air going into the engine. It's getting too hot and not working right.
The P146E code is triggered when the charge air cooler coolant pump is not regulating its RPM properly, causing excess temperature.
The charge air cooler is responsible for cooling the air that enters the engine. The coolant pump helps maintain the temperature by circulating coolant. If the pump's RPM regulation fails, it can lead to overheating, triggering the P146E code.
• Check Engine Light is on
• Engine performance issues
• Overheating warning
• Faulty charge air cooler coolant pump
• Electrical issues in the pump circuit
• Blockage in the coolant system
Coolant: A fluid that absorbs heat from the engine and releases it through the radiator.
RPM: Revolutions Per Minute, a measure of the speed of rotation.
• Check the electrical connections to the coolant pump.
• Inspect the coolant pump for any signs of damage or blockage.
• Test the pump's RPM and compare it to manufacturer specifications.
• Replace the faulty coolant pump.
• Repair or replace damaged electrical wiring.
• Flush the coolant system to remove blockages.
• OBD-II scanner
• Multimeter
• Coolant system flush kit
$150 - $400
Moderate
• Audi A4
• Volkswagen Golf
• BMW 3 Series
• Regularly check and maintain coolant levels.
• Inspect and clean the coolant system periodically.
• Ensure proper electrical connections to the pump.
Engine Performance
• Avoid driving the vehicle until the issue is fixed to prevent engine damage.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on the coolant pump.
This code has been more common in vehicles with turbocharged engines where the charge air cooler is a critical component.
High – Driving with this issue can lead to engine overheating and potential damage.
Ignoring this code can lead to significant engine damage, which may not be covered under warranty if neglected.
• Engine at operating temperature
• Vehicle in idle or under load
The charge air cooler coolant pump is typically located near the front of the engine bay, connected to the charge air cooler system.
Q: Can I drive with the P146E code?
A: It's not recommended to drive with this code active as it can lead to engine overheating.
Q: How do I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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