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Engine-Codes – Pontiac – P0352 Pontiac

P0352 Pontiac Code - Ignition Coil 2 Control Circuit

Quick Answer

When the diagnostic trouble code P0352 appears on a Pontiac vehicle, it indicates a problem with the ignition coil 2 control circuit. Common causes include Faulty ignition coil: The ignition coil itself may be defective, causing the control circuit to malfunction, Damaged wiring: Wiring connecting the ignition coil to the ECM may be damaged or frayed, disrupting the control circuit, Loose connections: Loose or corroded electrical connections can interfere with the proper functioning of the ignition coil control circuit. 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
P0352 Pontiac indicates Ignition Coil 2 Control Circuit.
Common causes
Common causes include Faulty ignition coil: The ignition coil itself may be defective, causing the control circuit to malfunction, Damaged wiring: Wiring connecting the ignition coil to the ECM may be damaged or frayed, disrupting the control circuit, Loose connections: Loose or corroded electrical connections can interfere with the proper functioning of the ignition coil control circuit.
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 12, 2024
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Code P0352 Pontiac Description

When the diagnostic trouble code P0352 appears on a Pontiac vehicle, it indicates a problem with the ignition coil 2 control circuit. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the engine cylinders. Ignition coil 2 specifically refers to the coil associated with the second cylinder in the firing order.

OBDII Code P0352 Pontiac - Ignition Coil 2 Control Circuit
P0352 Pontiac Code - Ignition Coil 2 Control Circuit

Common Causes of P0352 Pontiac

  1. Faulty ignition coil: The ignition coil itself may be defective, causing the control circuit to malfunction.
  2. Damaged wiring: Wiring connecting the ignition coil to the ECM may be damaged or frayed, disrupting the control circuit.
  3. Loose connections: Loose or corroded electrical connections can interfere with the proper functioning of the ignition coil control circuit.
  4. ECM issues: Problems with the engine control module (ECM) can also trigger the P0352 code, affecting the ignition coil control circuit.

Symptoms of P0352 Pontiac

  1. Engine misfires: Since the ignition coil is responsible for delivering the spark to ignite the air-fuel mixture in the cylinder, a faulty control circuit can result in misfires.
  2. Rough idling: A malfunctioning ignition coil 2 control circuit can lead to rough idling, causing the engine to shake or vibrate excessively when stationary.
  3. Decreased fuel efficiency: When the ignition coil is not functioning properly, the engine may not be burning fuel efficiently, leading to decreased fuel economy.
  4. Engine stalling: In severe cases, a malfunctioning ignition coil control circuit can cause the engine to stall unexpectedly, potentially leaving the vehicle stranded.

How to Fix P0352 Pontiac

  1. Diagnose the issue: Use a diagnostic tool to confirm the presence of the P0352 code and pinpoint the exact cause of the problem.
  2. Inspect wiring: Check the wiring connecting the ignition coil to the ECM for any damage or corrosion, and repair or replace as needed.
  3. Test ignition coil: Verify the functionality of the ignition coil associated with cylinder 2, and replace if it is found to be faulty.
  4. Check connections: Ensure all electrical connections related to the ignition coil 2 control circuit are secure and free of corrosion.
  5. Clear codes: After completing the repairs, clear the diagnostic trouble codes from the vehicle's ECM to reset the system and monitor for any recurring issues.

Cost to Fix P0352 Pontiac

The cost of repairing the ignition coil 2 control circuit on a Pontiac can vary depending on the specific cause of the issue and the cost of replacement parts. Generally, replacing an ignition coil can range from $100 to $250, while the labor cost for this repair may add another $50 to $100 per hour. Overall, the total cost for resolving the P0352 code could range from $150 to $500, including parts and labor. It's recommended to consult with a professional mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model. Labor rates at auto repair shops typically range between $80 and $150 per hour, but can vary based on location and other factors.

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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 P0352 Pontiac Code

1. What does the OBDII code P0352 mean on a Pontiac?

P0352 indicates a malfunction in the ignition coil 2 control circuit, meaning the engine control module (ECM) has detected a fault with the second ignition coil or its related wiring.

2. What are the common symptoms of code P0352?

Common symptoms include engine misfires, poor acceleration, rough idling, reduced fuel efficiency, and the Check Engine Light being illuminated.

3. What causes the P0352 code to be triggered?

The code can be caused by a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a malfunctioning ECM, or issues with the spark plugs.

4. How do I diagnose the P0352 code on my Pontiac?

Start by inspecting the ignition coil 2, checking for damaged wiring or corroded connectors. Use a multimeter to test the coil’s resistance and verify the circuit's integrity. Scan for additional codes that may indicate related issues.

5. Can I drive my Pontiac with a P0352 code?

While driving with a P0352 code is possible, it’s not recommended as it can cause further damage to the engine, reduce performance, and potentially damage the catalytic converter.

6. How do you fix the P0352 code on a Pontiac?

Repairs may include replacing the ignition coil 2, repairing or replacing damaged wiring or connectors, replacing spark plugs, or reprogramming or replacing the ECM if necessary.

7. What tools are needed to fix the P0352 code?

Common tools include an OBDII scanner, a multimeter for testing electrical circuits, and basic hand tools like screwdrivers and sockets for replacing components.

8. How much does it cost to fix the P0352 code?

Repair costs vary but typically range from $50-$150 for an ignition coil replacement, plus labor. Wiring repairs or ECM replacement may increase the cost.

9. Can a bad spark plug cause the P0352 code?

Yes, a faulty or worn spark plug can cause the ignition coil to malfunction, leading to the P0352 code being triggered.

10. How can I prevent the P0352 code from recurring?

Regular maintenance, including timely replacement of spark plugs and ignition coils, keeping wiring and connectors in good condition, and addressing engine issues promptly, can help prevent this code.

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