What is the P0357 fault number? What is the description of Ignition Coil “G” Primary/Secondary Circuit Failure? How can you fix P0357 fault codes? What are the causes and symptoms for the P0357 fault code
What is the P0357 Fault code? What does it all mean?
The powertrain control module, or PCM, controls the ignition coils to ensure that spark plugs are lit at the correct time. If the PCM detects a potential problem with the ignition coil “G” (cylinder #7 is the ignition coil) or its circuit, a code P0357 will be set. The letters “A” and “B”, respectively, are used to address cylinders. Continue reading.
There are several ignition systems. These include single coil, distributor and multi coil (COP/Coil on Plug). Commonly, the P0357 code can be found in COP ignition systems.
The COP ignition uses a sparkplug on each cylinder and an igniter coil on each sparkplug. This system eliminates the requirement for spark plug wires. Each coil has two wires. The first is the power supply center’s battery supply. The ground circuit from your PCM is the other wire. This circuit is used by the PCM to enable or disable coil operation.
The PCM continuously monitors the ground circuit. The PCM will set a fault code if it detects any fault. Fault codes P0350 through P0362 refer to faults in the ignition coil circuit from cylinder 1 up to cylinder 12. The code’s number at the end indicates which cylinder is experiencing fault. Code P0351 means cylinder 1, P0357 signifies cylinder 7, P0357 signifies cylinder 7 and P0362 signifies a fault within the ignition coil circuit for cylinder 12. P0350, a generic code, simply refers to an ignition coil circuit problem.
Two windings are found inside an ignition coil. The primary circuit is the low voltage side. The secondary circuit converts the electric current generated by the primary winding into high voltage via inducing. The ignition coils are responsible for igniting the spark plugs by converting the low voltage battery current to high voltage. This means that if one of the ignition coil circuits fails, it will not work properly and can lead to engine problems.
What causes the P0357 Fault code?
Below are some reasons to set fault code P0357:
- – Defective ignition coil (cylinder 7)
- – Open circuit or short circuit in an ignition coil circuit
- – Connectivity problems, such as loose or damaged connectors or cables
- – One or more spark plugs are damaged
- – A PCM that is not working or requires a software upgrade
What are the symptoms of the P0357 Fault Code?
These symptoms may be present in vehicles with code P0357.
- – Illumination for check engine light
- Fluctuations in idle speeds
- – Insufficient engine power, particularly under heavy loads
- – Misfire during acceleration
- – The engine is able to run hard
- – In some vehicles, the PCM can be programmed to turn off the fuel injector in case of an ignition coil failure.
How do I fix the P0357 fault code?
Is it stalling? The problem may be intermittent, if the engine doesn’t start up again. You can try moving the coil wires from cylinder 7 while the vehicle is running. If the car doesn’t start, you can fix the problem cable or connectors.
- – Repair of faulty wires or connectors for the ignition coil(s).
- – Replacing incompatible or faulty spark plugs
- – Replacing/repairing ignition coils
- Repair of vacuum leaks in the intake tube
- – Replacing the defective PCM
How Serious Is the P0357 Fault Coding?
The vehicle might misfire when the P0357 code has been set. This can be especially true during acceleration. These situations can prove dangerous in extreme overtaking situations when high engine performance is expected.
