Engine-Codes.com
Engine-Codes – Toyota – P0352 2003 Toyota Highlander

P0352 2003 Toyota Highlander Code - Ignition Coil 2 Primary/Secondary Circuit

Quick Answer

The P0352 diagnostic trouble code (DTC) for a 2003 Toyota Highlander specifically refers to the Ignition Coil 2 Primary/Secondary Circuit. Common causes include Faulty ignition coil for cylinder 2, Wiring or connector issues in the ignition coil circuit, ECM malfunction. 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
P0352 2003 Toyota Highlander indicates Ignition Coil 2 Primary/Secondary Circuit.
Common causes
Common causes include Faulty ignition coil for cylinder 2, Wiring or connector issues in the ignition coil circuit, ECM malfunction.
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 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0352 2003 Toyota Highlander Description

The P0352 diagnostic trouble code (DTC) for a 2003 Toyota Highlander specifically refers to the Ignition Coil 2 Primary/Secondary Circuit. This code indicates a problem with the ignition coil associated with cylinder 2 in the engine. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the combustion chamber. When the ignition coil malfunctions, it can lead to misfires, rough idling, poor fuel efficiency, and even engine stalling.

OBDII Code P0352 2003 Toyota Highlander - Ignition Coil 2 Primary/Secondary Circuit
P0352 2003 Toyota Highlander Code - Ignition Coil 2 Primary/Secondary Circuit

Common Causes of P0352 2003 Toyota Highlander

  1. Faulty ignition coil for cylinder 2
  2. Wiring or connector issues in the ignition coil circuit
  3. ECM malfunction
  4. Spark plug issues
  5. Ignition system component failure

Symptoms of P0352 2003 Toyota Highlander

  1. Engine misfires or rough idling
  2. Reduced fuel efficiency
  3. Engine stalling or hesitation during acceleration
  4. Illumination of the Check Engine Light
  5. Increased exhaust emissions

How to Fix P0352 2003 Toyota Highlander

  1. Begin by diagnosing the specific cause of the P0352 code using a scan tool to pinpoint the issue.
  2. Inspect the ignition coil for cylinder 2, checking for any signs of damage or wear.
  3. Test the primary and secondary circuits of the ignition coil for proper voltage and continuity.
  4. Replace the faulty ignition coil if necessary, ensuring proper installation and connection.
  5. Clear the DTC and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0352 2003 Toyota Highlander

The typical repair costs for addressing the P0352 code on a 2003 Toyota Highlander can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the price of a new ignition coil, diagnostic time, and labor for the repair process. It is important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the final repair costs. For a more accurate estimate, it is recommended to consult with local auto repair shops or dealerships.

When is the Code Detected?

Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a valid pulse signal from the ignition coil.

Need more information about the P0352 2003 Toyota Highlander code?

Need more information on how to fix the P0352 2003 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0352 2003 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area

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 P0352 2003 Toyota Highlander Code

1. What does the OBDII code P0352 mean on a 2003 Toyota Highlander?

P0352 indicates a malfunction in the ignition coil "B" (Ignition Coil 2) primary or secondary circuit.

2. What are the common symptoms of code P0352 in a 2003 Toyota Highlander?

Symptoms include engine misfires, rough idling, reduced power, poor fuel economy, and potential difficulty starting the vehicle.

3. What causes the P0352 code on a 2003 Toyota Highlander?

Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a malfunctioning PCM (Powertrain Control Module), or corroded electrical connections.

4. Can I still drive my 2003 Toyota Highlander with a P0352 code?

Driving with this code is not recommended as it can lead to engine misfires, reduced performance, and potential damage to the catalytic converter.

5. How is the P0352 code diagnosed in a 2003 Toyota Highlander?

Diagnosis involves inspecting the ignition coil, checking for damaged wiring or connectors, testing the coil for proper resistance, and scanning the PCM for additional codes.

6. How do I fix code P0352 on a 2003 Toyota Highlander?

Repairs may include replacing the faulty ignition coil, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/replacing the PCM if necessary.

7. How much does it cost to fix the P0352 code on a 2003 Toyota Highlander?

The cost depends on the repair, but replacing an ignition coil typically costs between $100 and $300, including parts and labor.

8. Can a bad spark plug cause the P0352 code on a 2003 Toyota Highlander?

While a bad spark plug itself doesn’t directly cause P0352, it can lead to misfires that may strain the ignition coil and trigger the code.

9. What tools are needed to repair the P0352 code on a 2003 Toyota Highlander?

Common tools include a scan tool/OBDII reader, multimeter, socket set, and possibly a wiring repair kit.

10. What happens if I ignore the P0352 code on my 2003 Toyota Highlander?

Ignoring the code can lead to worsening engine performance, potential engine damage, and costly repairs over time.

Discuss the causes and fixes for P0352 2003 Toyota Highlander OBDII Code

Submit a New Comment

Code P0352 2003 Toyota Highlander comments

No comments found for this page.