P1320 – Lexus DTC

Lexus DTC P1320 – Igniter Circuit Malfunction (No. 5)

DTC P1320 meaning on Lexus

DTC P1320 for Lexus indicates an Igniter Circuit Malfunction (No. 5). This fault code specifically points to an issue with the ignition coil or igniter circuit for cylinder No. 5 in the engine.

Lexus DTC P1320 symptoms

Symptoms of DTC P1320 on a Lexus may include:

• Engine misfires
• Loss of power
• Rough idling
• Difficulty starting the engine
• Illuminated check engine light

Lexus DTC P1320 causes

Common causes of DTC P1320 on a Lexus are:

• Defective ignition coil for cylinder No. 5
• Faulty igniter circuit for cylinder No. 5
• Wiring issues or poor connections in the ignition system
• ECU (Engine Control Unit) malfunction

Lexus DTC P1320 seriousness

Ignoring DTC P1320 on a Lexus can lead to more severe engine problems over time. Continued driving with this fault may cause damage to the catalytic converter, decrease fuel efficiency, and potentially harm other engine components.

How to diagnose DTC P1320 on Lexus

To diagnose DTC P1320 on a Lexus, follow these steps:

1. Use an OBD-II scanner to retrieve the fault code and confirm P1320.
2. Inspect the ignition coil and igniter circuit for cylinder No. 5 for any visible damage or wear.
3. Check the wiring and connections related to the ignition system for any issues.
4. If necessary, perform a continuity test on the ignition coil and igniter circuit.

How to fix DTC P1320 on Lexus

To fix DTC P1320 on a Lexus, consider the following:

1. Replace the ignition coil for cylinder No. 5 if it is faulty.
2. Repair or replace any damaged wiring or connectors in the igniter circuit.
3. If the ECU is suspected to be the issue, have it tested and potentially replaced by a professional.

How to erase DTC P1320 on Lexus

To erase DTC P1320 on a Lexus:

1. Use an OBD-II scanner to clear the fault code from the vehicle’s ECU.
2. After fixing the underlying issue causing P1320, ensure the repair is completed successfully.
3. Perform a test drive to confirm the fault code does not reappear.

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