AutoCodes – Lexus – P1305 Lexus

P1305 Lexus Code - Igniter Circuit Malfunction No. 2

Quick Answer

Direct Ignition System (DIS) is a 1-cylinder ignition system that ignites one cylinder with one ignition coil. Common causes include Faulty Ignition Coil No, 2, Ignition Coil No. 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: P1305 Lexus indicates Igniter Circuit Malfunction No. 2.
Common causes: Common causes include Faulty Ignition Coil No, 2, Ignition Coil No.
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.

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Code Popularity 30,498

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1305 Lexus Description

Direct Ignition System (DIS) is a 1-cylinder ignition system that ignites one cylinder with one ignition coil. Ignitor is integral to ignition coil. The Engine Control Module (ECM) determines ignition timing and outputs a ignition signal (IGT) for each cylinder. Based on the IGT signals, power transistors in the ignitor cut of current to primary coil in ignition coil, causing ignition coil to fire spark plug. After delivering a command to turn off primary circuit on the IGT wire, ECM monitors IGF circuit to ensure primary switching occurred.

OBDII Code P1305 Lexus - Igniter Circuit Malfunction No. 2 - AutoCodes.com — P1305 Lexus Code - Igniter Circuit Malfunction No. 2

What does this mean?

What are the Possible Causes of the DTC P1305 Lexus?

Faulty Ignition Coil No. 2
Ignition Coil No. 2 harness is open or shorted
Ignition Coil No. 2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1305 Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1305 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 P1305 Lexus Code

1. What does the OBDII code P1305 mean on a Lexus?

P1305 indicates an Igniter Circuit Malfunction for ignition coil No. 2, meaning the circuit is not functioning properly for that coil.

2. What are common symptoms of the P1305 code on a Lexus?

Symptoms include engine misfires, rough idling, reduced performance, difficulty starting the engine, and the Check Engine Light illuminating.

3. What causes the P1305 code on a Lexus?

Common causes include a faulty ignition coil, damaged wiring or connectors in the igniter circuit, a defective ignition control module, or a malfunctioning ECM/PCM.

4. Can I drive my Lexus with the P1305 code active?

While the car may still run, driving with this code can lead to further engine damage, reduced fuel efficiency, and unsafe driving conditions due to misfires.

5. How can I diagnose the P1305 code on a Lexus?

Start by inspecting the ignition coil No. 2 and its wiring for damage. Use a multimeter to check for proper voltage and continuity in the circuit, and test the ignition control module functionality.

6. How do I fix the P1305 code on a Lexus?

Repairs may include replacing the ignition coil No. 2, repairing or replacing damaged wiring or connectors, or replacing the ignition control module if faulty.

7. How much does it cost to fix the P1305 code on a Lexus?

Costs vary depending on the issue, but replacing an ignition coil typically ranges from $100 to $300, excluding labor. Wiring repairs or ECM replacement may cost more.

8. Can a bad ignition coil trigger the P1305 code on my Lexus?

Yes, a defective ignition coil or its circuit can cause the P1305 code due to improper or failed ignition.

9. Will clearing the P1305 code fix the problem?

Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.

10. Should I replace all ignition coils when fixing the P1305 code?

It is not necessary to replace all ignition coils unless multiple coils are failing. Focus on diagnosing and repairing coil No. 2 and its associated circuit.

Discuss the causes and fixes for P1305 Lexus OBDII Code

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Evan
Date: October 6, 2018 at 4:49 pm

1998 Lexus ls400, P0335, P1305, P1335, P1345, P1350, B2796 codes. is my ECM fried?

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OBDIITech
Date: October 7, 2018 at 1:20 am

No necessarily. Have you tried clearing all the codes? any other symptoms, besides the codes?

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