P0352 Toyota Code: Meaning, Cause, Fixes, Costs & Prevention Measure

Every vehicle owner has, at one point or another, faced the ominous glow of the ‘Check Engine light on their dashboard. This can signify a host of potential issues, from something as innocuous as a loose gas cap to more concerning problems like C1241 Code or the P0352 Toyota Code. This guide will focus on the latter, a common code for Toyota owners that points to issues within the Ignition Coil 2 Primary/Secondary Circuit. In this comprehensive guide, we’ll take you on a journey to understand what this code means, its symptoms, its causes, how to fix it, and ways to prevent it in the future. All you need to do is sit back, relax, and let us navigate this course.

Understanding P0352 Toyota Code

First and foremost, let’s decode what P0352 Toyota Code is all about. When your car’s On-Board Diagnostics (OBD) system flags this code, it’s signalling an issue in the Ignition Coil 2 Primary/Secondary Circuit. In simpler terms, your vehicle’s Engine Control Module (ECM), the brain of your car’s engine management system, has detected an inconsistency or malfunction within this ignition coil circuit.

Symptoms of P0352 Toyota Code

With that said, how does this fault manifest itself in your vehicle? Generally, you might encounter a few tell-tale symptoms, which include engine misfires, a decrease in fuel efficiency, trouble starting the car, and a noticeable loss in power. Of course, the infamous ‘Check Engine’ light is your most obvious clue. However, you should keep an eye out for these signs, as they can offer an early warning that something is amiss.

Causes of P0352 Toyota Code

Moving on, let’s delve into the possible causes of the P0352 Toyota Code. The code might be triggered by a variety of issues. Perhaps there’s a fault within the ignition coil itself, or maybe it’s the spark plugs causing the trouble. Alternatively, there could be issues with the ECM or problems with the wiring in the circuit. Unravelling the cause is critical to fix the issue and prevent it from recurring.

How to Fix P0352 Toyota Code

Now, to the part you’ve been waiting for – how to fix the P0352 Toyota Code. Firstly, confirm the code using an OBD II scanner, a tool that interacts with your car’s computer to identify issues. Once the code is confirmed, the ignition coil, spark plugs, and related wiring should be thoroughly inspected. Remember, faulty components must be repaired or replaced as necessary to rectify the problem.

Costs of Fixing P0352 Toyota Code

It’s also essential to consider the costs of fixing the P0352 Toyota Code. The expenses can fluctuate widely based on the exact cause. If it’s a case of replacing the ignition coil, you might be looking at anywhere between $100 and $300. Spark plug replacement typically ranges from $10 to $100. However, be prepared for a heftier bill if the ECM requires repair or replacement.

Prevention Measures for P0352 Toyota Code

Lastly, but certainly not least, let’s discuss preventive measures for the P0352 Toyota Code. Regular vehicle maintenance is key. This includes periodic checks of the ignition system and wiring to catch potential issues early on. Furthermore, paying attention to your vehicle’s fuel efficiency and overall performance can act as an early warning system, alerting you to possible problems before they escalate.


There you have it – a comprehensive rundown on the P0352 Toyota Code. As we’ve discovered, understanding this code and knowing how to handle it can save you both time and money, not to mention the unnecessary stress. With the right knowledge and a proactive approach to car maintenance, you can ensure the health and longevity of your vehicle. Remember, when it comes to your car, prevention is always better than cure.