P0352 2021 Honda CR-V Code - No. 2 Cylinder Ignition Coil Circuit Malfunction

P0352 indicates a malfunction in the ignition coil circuit for cylinder No. 2, which means the engine control module (ECM) has detected an issue with the coil's electrical circuit.

Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, the check engine light turning on, and hesitation during acceleration.

Common causes include a faulty ignition coil, damaged wiring or connectors in the coil circuit, a bad spark plug, a malfunctioning ECM, or corrosion in the electrical connections.

While it may still be drivable, it is not recommended to drive with this code active, as it can cause further engine damage, reduced performance, and increased emissions.

Diagnosis involves using a scan tool to confirm the code, inspecting the ignition coil and its wiring for damage or loose connections, testing the coil's resistance, and swapping the ignition coil with another cylinder to see if the issue moves.

Repairs could include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, replacing a bad spark plug, or reprogramming or replacing the ECM if necessary.

The cost can vary depending on the cause, but replacing an ignition coil typically costs $100–$300, while spark plug replacement or wiring repairs may cost less.

Yes, a worn or damaged spark plug can overload the ignition coil, leading to circuit issues and triggering the P0352 code.

Clearing the code will turn off the check engine light temporarily, but if the underlying issue is not fixed, the code will likely return.

Yes, though less common, a malfunctioning ECM can fail to properly control the ignition coil for cylinder No. 2 and trigger the P0352 code.