P0355 – OBD-II DTC

OBD-II DTC P0355 – Ignition Coil D Primary/Secondary Circuit Malfunction

DTC P0355 meaning

DTC P0355 refers to a malfunction in the ignition coil D primary/secondary circuit. This code indicates that the Engine Control Module (ECM) has detected an issue with the ignition coil circuit for cylinder D, which can affect the engine’s performance and efficiency. The ignition coil is responsible for converting the battery’s voltage into the high voltage needed to ignite the air-fuel mixture in the engine’s cylinders.

DTC P0355 symptoms

Common symptoms associated with DTC P0355 may include:

• Engine misfires
• Rough idling
• Decreased engine performance
• Increased fuel consumption
• Check Engine Light illuminated

DTC P0355 causes

Several factors can lead to the triggering of DTC P0355, including:

• Faulty ignition coil D
• Damaged wiring or connectors in the ignition coil circuit
• Faulty Engine Control Module (ECM)
• Short circuits or open circuits in the ignition system
• Corrosion or poor connections in the ignition coil circuit

DTC P0355 seriousness

DTC P0355 is considered a serious issue as it can lead to engine misfires, which may cause further damage to the engine over time. If left unaddressed, it can result in poor engine performance, increased emissions, and potential damage to other components such as the catalytic converter. It is advisable to diagnose and repair the issue promptly to maintain optimal vehicle performance.

How to diagnose DTC P0355

To diagnose DTC P0355, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P0355 code.
2. Inspect the ignition coil D and its wiring for any visible damage or corrosion.
3. Check the connectors for secure connections and signs of wear.
4. Test the ignition coil D using a multimeter to ensure it is functioning correctly.
5. Inspect the ECM for any faults or updates that may be required.
6. Clear the code and perform a test drive to see if the code reappears.

How to fix DTC P0355 step-by-step instructions

To fix DTC P0355, follow these steps:

1. Disconnect the negative battery terminal to ensure safety.
2. Inspect and repair any damaged wiring or connectors in the ignition coil circuit.
3. If the ignition coil D is faulty, replace it with a new one.
4. Reconnect all connectors and ensure they are secure.
5. Reconnect the negative battery terminal.
6. Use an OBD-II scanner to clear the DTC and reset the check engine light.
7. Perform a test drive to verify that the issue has been resolved and the code does not reappear.

How to erase DTC P0355

To erase DTC P0355, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Follow the prompts to clear the DTC from the ECM.
5. Disconnect the scanner and turn off the ignition.
6. Start the engine and check if the check engine light remains off.

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