![]() I had a look through this thread, but it seems like there is no one clear answer to this. Get a quote and book an appointment online or speak to a service advisor at 1-80.I am new to the forum and I want to ask about the engine fault. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Also, it is recommended to check the intake manifold for vacuum leaks. It is strongly suggested to check the Hertz signal from the ECM to the coil pack. Repair or replacement of any damaged coil pack wiringĪdditional comments for consideration regarding the P0352 code ![]() Repairing a vacuum leak such as a leaking intake manifold gasket or cracked vacuum line This code is known to cause an engine misfire, which will damage or clog the catalytic convertor if not addressed quickly enough. Doing so will stress the other cylinders and cause parts such as piston rings, spark plugs and other coil packs to wear more quickly. Driving with a misfire is bad for the engine because if one cylinder is hindered, the other cylinders will have to work twice as hard to run the vehicle. It is fairly serious because you can not legally pass inspection with a Check Engine Light on. Measuring the Hertz signal will help you determine if the Engine Control Module is faulty, or if there is an interruption in the coil pack circuit, such as corrosion build up or damaged wiring. Also, some may neglect to measure the hertz signal that should be sent by the ECM to the coil pack. Some may overlook the fact that a vacuum leak could cause this code as well. Uses a multimeter to measure the Hertz signal sent to a coil pack (helps verify whether the ECM is sending the proper signal to the coil pack)Ĭommon mistakes when diagnosing the P0352 code Inspects the intake manifold for vacuum leaks Inspects the coil pack circuit for a proper ground supply Inspects the wires connecting to the coil packs for fraying, corrosion and at times melting Measures the voltage present at the coil pack Inspects the condition of the spark plug electrodes Performs a resistance test on the suspected coil pack ![]() How does a mechanic diagnose the P0352 code? ![]() Engine misfire, abnormal vibrations may be felt at idle or while driving.Open or short in the wiring of the electrical circuit of the second cylinder coil pack What causes the P0352 code?ĭamaged or corroded wiring of the second cylinder coil packĭamage or corrosion of the wires connecting the second cylinder coil pack to the Engine Control Module In this case, the coil pack detected as malfunctioning is located above cylinder number 2. This, in turn, helps induce the high voltage and amperage needed to ignite the fuel during the combustion process.Ī trouble code P0352 may set if the Engine Control Module (ECM) detects an issue with the ignition process of the coil pack. The secondary coil is located inside the primary coil, and spins at rapid rates within the primary coil, causing a magnetic field. The large primary coil receives the initial voltage from the battery and transfers it to the smaller secondary coil. The coil pack is characteristically a high voltage generator consisting of two coils, one primary coil and one secondary coil. A coil pack will on average will produce about 70,000 to 100,000 Volts.Ī coil pack, also known as a coil on plug or an ignition coil, is used to convert the standard battery voltage into the higher voltage needed for the internal combustion process of an engine. The coil is essentially a transformer which revamps the lower voltage supplied by the battery into the higher voltage that spark plugs need to ignite the fuel for a successful combustion process. The last digit in this particular trouble code indicates that there is an issue detected within the ignition process of cylinder number 2. Ignition Coil B Primary/Secondary Circuit Malfunction What the P0352 code means
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