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P1662 Volkswagen Code - Engine Coolant Blower Motor Speed 2 Short To Ground

Quick Answer

The P1662 diagnostic trouble code for Volkswagen vehicles refers to an issue with the Engine Coolant Blower Motor Speed 2 being short to ground. Common causes include Short circuit: A short circuit in the wiring of the Engine Coolant Blower Motor Speed 2 can cause it to be short to ground, Faulty blower motor: The blower motor itself may be faulty, causing it to short to ground, Wiring issues: Damaged or corroded wiring can lead to electrical problems, including a short to ground. 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
P1662 Volkswagen indicates Engine Coolant Blower Motor Speed 2 Short To Ground.
Common causes
Common causes include Short circuit: A short circuit in the wiring of the Engine Coolant Blower Motor Speed 2 can cause it to be short to ground, Faulty blower motor: The blower motor itself may be faulty, causing it to short to ground, Wiring issues: Damaged or corroded wiring can lead to electrical problems, including a short to ground.
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 Sep 09, 2024
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Code P1662 Volkswagen Description

The P1662 diagnostic trouble code for Volkswagen vehicles refers to an issue with the Engine Coolant Blower Motor Speed 2 being short to ground. This means that there is an electrical problem that is causing the blower motor to run at an incorrect speed or not function at all. The engine coolant blower motor is responsible for cooling down the engine when it gets too hot, so this issue can have serious implications for the vehicle's performance and longevity.

OBDII Code P1662 Volkswagen - Engine Coolant Blower Motor Speed 2 Short To Ground
P1662 Volkswagen Code - Engine Coolant Blower Motor Speed 2 Short To Ground

Common Causes of P1662 Volkswagen

  1. Short circuit: A short circuit in the wiring of the Engine Coolant Blower Motor Speed 2 can cause it to be short to ground.
  2. Faulty blower motor: The blower motor itself may be faulty, causing it to short to ground.
  3. Wiring issues: Damaged or corroded wiring can lead to electrical problems, including a short to ground.
  4. Faulty relay: A faulty relay that controls the blower motor speed can also trigger this code.

Symptoms of P1662 Volkswagen

  1. Engine overheating: One of the most common symptoms of this issue is the engine overheating, as the blower motor is unable to cool down the engine efficiently.
  2. Inconsistent cooling: The vehicle may experience inconsistent cooling, with the temperature fluctuating unexpectedly.
  3. Strange noises: You may hear unusual noises coming from the engine compartment, indicating a problem with the blower motor.
  4. Check engine light: The check engine light may illuminate on the dashboard, signaling a fault in the cooling system.

How to Fix P1662 Volkswagen

  1. Diagnostic: Begin by diagnosing the issue using a scan tool to confirm the P1662 code and pinpoint the exact cause of the problem.
  2. Inspect wiring: Check the wiring harness for any damage or corrosion and repair or replace as needed.
  3. Test blower motor: Test the blower motor to determine if it is functioning correctly. Replace it if necessary.
  4. Check relay: Inspect the relay that controls the blower motor speed and replace it if found to be faulty.
  5. Clear codes: After making the necessary repairs, clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P1662 Volkswagen

The cost of repairing the Engine Coolant Blower Motor Speed 2 short to ground issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $300. Overall, you can expect to pay anywhere from $250 to $600 for this repair. It's important to note that these are rough estimates and actual costs may vary. Additionally, factors such as the vehicle make and model, the extent of the damage, and the shop's hourly rates can all impact the final cost of the repair. It's recommended to get quotes from multiple auto repair shops to find the best price for your specific situation.

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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.

Frequently Asked Questions about P1662 Volkswagen Code

What does the OBDII code P1662 mean on a Volkswagen?

The P1662 code indicates a problem with the Engine Coolant Blower Motor Speed 2 circuit, specifically a short to ground.

What are the common symptoms of the P1662 code?

Common symptoms include the engine running hotter than normal, reduced cooling fan performance, or the cooling fan not functioning at all.

What causes the P1662 code in a Volkswagen?

This code is typically caused by a short to ground in the wiring, a faulty blower motor, a defective cooling fan control module, or corroded electrical connections.

Can I drive my Volkswagen with the P1662 code?

Driving with this code is not recommended, as it may lead to engine overheating and potential damage if the cooling fan is not functioning properly.

How do I diagnose the P1662 code?

Diagnosis involves inspecting the blower motor wiring for damage or shorts, testing the cooling fan control module, and checking electrical connections and fuses.

What tools are needed to repair the P1662 code?

Basic tools include a multimeter for electrical testing, a scan tool for clearing codes, and potentially wire repair tools if damaged wiring is found.

Can a blown fuse cause the P1662 code?

Yes, a blown fuse in the cooling fan circuit can result in a short to ground and trigger the P1662 code.

How much does it cost to fix the P1662 code?

Repair costs vary but may range from $50 to $500 depending on whether the issue is a simple wiring repair or if components like the blower motor or control module need replacement.

How do I prevent the P1662 code from occurring again?

Regularly inspect and maintain the cooling system wiring, ensure connections are secure, and address any signs of corrosion promptly.

Will clearing the P1662 code fix the problem?

Clearing the code will not fix the underlying issue. The root cause, such as damaged wiring or a faulty component, must be repaired to prevent the code from returning.

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