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Engine-Codes – Generic – C1735

C1735 Code - Ignition Signal

Quick Answer

The C1735 diagnostic trouble code (DTC) relates to the ignition signal in the vehicle. Common causes include Faulty ignition coil or spark plugs, Damaged wiring harness or poor electrical connections, Malfunctioning ignition module or ECM. 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
C1735 indicates Ignition Signal.
Common causes
Common causes include Faulty ignition coil or spark plugs, Damaged wiring harness or poor electrical connections, Malfunctioning ignition module or ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code C1735 Description

The C1735 diagnostic trouble code (DTC) relates to the ignition signal in the vehicle. In a typical automotive system, the ignition signal is crucial for initiating the combustion process in the engine cylinders. When this signal is disrupted or fails to function properly, it can cause significant performance issues in the vehicle. The ignition signal is responsible for triggering the spark plugs to ignite the air-fuel mixture in the combustion chamber, leading to the power generation required for the engine to run smoothly.

OBDII Code C1735 - Ignition Signal
C1735 Code - Ignition Signal

Common Causes of C1735

  1. Faulty ignition coil or spark plugs.
  2. Damaged wiring harness or poor electrical connections.
  3. Malfunctioning ignition module or ECM.
  4. Water or moisture intrusion in the ignition system.
  5. Wear and tear over time due to high mileage or age.

Symptoms of C1735

  1. Engine misfires or hesitation during acceleration.
  2. Rough idling or shaking while the vehicle is at a standstill.
  3. Reduced fuel efficiency and overall performance.
  4. Difficulty starting the engine or frequent stalling.
  5. Illumination of the Check Engine Light on the dashboard.

How to Fix C1735

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble code(s) stored in the system.
  2. Inspect the ignition system components, including the ignition coil, spark plugs, wiring harness, and ignition module, for any visible damage or signs of wear.
  3. Test the ignition components using a multimeter to check for proper resistance and continuity.
  4. Replace any faulty ignition components identified during the inspection, ensuring they are compatible with the vehicle's make and model.
  5. Clear the DTC(s) from the system's memory using the diagnostic scanner and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix C1735

The cost of repairing the ignition signal issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the parts required for this repair, such as ignition coils, spark plugs, or wiring harnesses, can range from $100 to $300. Labor costs typically range from $100 to $300, depending on the shop's hourly rate and the complexity of the repair. Overall, the total cost for addressing the C1735 code can range from $200 to $600, but it's important to consult with a qualified mechanic for a more accurate estimate based on your vehicle's requirements and location.

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Code C1735 Information for Specific Makes

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 C1735 Code

1. What are the common symptoms of OBDII code C1735 (Ignition Signal)?

The common symptoms of OBDII code C1735 include engine misfires, rough idling, poor acceleration, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code C1735?

Possible causes of OBDII code C1735 include a faulty ignition coil, damaged ignition wiring, a malfunctioning ignition control module, or a problem with the ignition switch.

3. How can I diagnose the issue related to OBDII code C1735?

Diagnosing the issue related to OBDII code C1735 involves using a diagnostic scanner to retrieve the code, checking the ignition system components for any visible damage, and testing the ignition coil and control module for proper functionality.

4. Can a DIY enthusiast repair OBDII code C1735 at home?

Depending on the exact cause of the code, a DIY enthusiast may be able to repair OBDII code C1735 at home by replacing the faulty ignition component or fixing any damaged wiring. However, complex issues may require professional assistance.

5. How important is it to address OBDII code C1735 promptly?

It is important to address OBDII code C1735 promptly as ignoring the issue can lead to further damage to the ignition system, reduced fuel efficiency, and potential safety hazards while driving.

6. Are there any preventive measures to avoid OBDII code C1735?

Routine maintenance of the ignition system, such as regular spark plug replacements and inspection of ignition components, can help prevent OBDII code C1735 from occurring.

7. Can OBDII code C1735 cause damage to other vehicle components?

If left unaddressed, OBDII code C1735 can potentially cause damage to other vehicle components, such as the catalytic converter, due to incomplete combustion and increased emissions.

8. What is the typical cost to repair OBDII code C1735?

The cost to repair OBDII code C1735 can vary depending on the underlying cause and whether the repair is done at a dealership or an independent repair shop. Costs may range from $100 to $500 or more.

9. How long does it take to repair OBDII code C1735?

The time to repair OBDII code C1735 can vary based on the complexity of the issue, availability of parts, and the technician's experience. In general, it may take anywhere from one to several hours to complete the repair.

10. Can driving with OBDII code C1735 cause further damage to the vehicle?

Continuing to drive with OBDII code C1735 can potentially cause further damage to the vehicle's ignition system, leading to more severe issues over time. It is recommended to address the problem as soon as possible.

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