Error Code P0352
Moderate Issue
DTC Code P0352 indicates an issue with the Ignition Coil 2 Control Circuit. This code is triggered when the Engine Control Module (ECM) detects a mismatch between the commanded and actual state of the ignition control circuit for the second coil, affecting the spark event.
What symptoms indicate Error Code P0352?
- Engine Light ON: The check engine light or service engine soon warning light illuminates, indicating a potential issue with the ignition coil 2 control circuit.
- Lack/Loss of Power: The vehicle may experience a noticeable reduction in power, which can be linked to the malfunctioning ignition coil affecting engine performance.
- Engine Harder to Start: Starting the engine may become more difficult due to the compromised ignition coil 2 control circuit, affecting the ignition process.
- Engine Hesitation: The engine may hesitate during acceleration, which can be attributed to the ignition coil 2 not functioning properly.
- Rough Engine Idle: The engine may idle roughly, indicating a potential issue with the ignition coil 2 control circuit affecting engine smoothness.
What causes OBD code Error Code P0352?
- The ignition coil may be faulty, leading to improper spark generation and engine misfires.
- An open or shorted harness in the ignition coil circuit can disrupt the electrical flow, causing the coil to malfunction.
- Poor electrical connections in the ignition coil circuit can result in intermittent or weak signals, affecting engine performance.
- A malfunctioning Engine Control Module (ECM) can fail to send the correct signals to the ignition coil, leading to ignition issues.
How to fix OBD code Error Code P0352?
- Initial Inspection: Inspect the ignition coil and its connections for any visible damage or corrosion. Ensure that the wiring harness is securely connected to the ignition coil.
- Check Power Supply: Using a multimeter, verify that there is battery voltage at the ignition coil connector with the ignition key in the ON position. If there is no voltage, inspect the wiring and fuses related to the ignition system.
- Test Ground Circuit: Ensure the ground circuit for the ignition coil is intact. Use a multimeter to check for continuity between the ignition coil ground terminal and the engine block.
- Inspect Control Circuit: Check the control circuit from the Engine Control Module (ECM) to the ignition coil. Look for any signs of damage or disconnection in the wiring.
- Swap Ignition Coils: Swap the ignition coil with another cylinder to see if the problem follows the coil. If the DTC changes to the other cylinder, the ignition coil is faulty.
- ECM Testing: If all other components are functioning correctly, test the ECM for proper operation. This may require specialized equipment or consultation with the vehicle's service manual.