What is the code P0354 on a Ford Expedition?

The code P0354 on a Ford Expedition indicates an issue with the ignition coil “D” primary/secondary circuit. This code is a generic OBD2 code and is relatively straightforward to diagnose. It is typically caused by a bad coil pack or a wiring harness issue.
To determine if it is the primary or secondary circuit that has triggered the code, you can inspect the wiring harness. The primary wiring refers to the wiring harness that connects the Expedition’s ECM/PCM to the ignition system. A short, open, or poorly grounded wiring harness is often the cause of this code.
If you are experiencing misfires or a loss of acceleration, it is recommended to check the circuits and connections to the coils on cylinders 4, 5, and 6. Multiple coil failures can occur simultaneously on a Ford vehicle, especially under load.
It’s important to note that the cost to diagnose and repair the P0354 code can vary depending on factors such as the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour for diagnosis and labor.
If you need more information on how to fix the P0354 code, it is recommended to consult the factory service manuals or seek assistance from a qualified mechanic.
I hope this helps! Let me know if you have any other questions.

What is the code P0354 on a 2004 Ford Expedition?

What Does the P0354 Code Mean? Diagnostic trouble code (DTC) P0354 stands for “Ignition Coil ‘D’ Circuit Malfunction.” It indicates that the PCM has detected a problem either in the primary or secondary circuit for ignition coil “D”.

Where is ignition coil H located?

Modern engines use a coil on plug ignition system. By placing the coil directly above the spark plug, it eliminates the need for spark plug wires.

Which ignition coil is coil D?

The powertrain control system (PCM) manages the ignition coils that ignite the spark plugs at precisely the right time. If the PCM detects a potential problem with the ignition coil “D” (which is the cylinder #4 ignition coil) or its circuit, code P0354 may be set.

What is the code for a bad coil pack?

With most modern vehicles, a faulty ignition coil is enough to turn on the Check Engine Light. If you have an OBD-II diagnostic scanner, you may see a P0351 ignition code.

What does ignition coil D secondary circuit mean?

Diagnostic trouble code (DTC) P2311 code means “Ignition Coil ‘D’ Secondary Circuit.” This code triggers when the powertrain control module (PCM) detects an abnormal voltage in a secondary control circuit of an ignition coil.

What does ignition coil F primary secondary circuit mean?

Reading Time: 3 minutes. The P0356 code stands for “Ignition Coil F Primary/Secondary Circuit Malfunction.” It occurs when the powertrain control module (PCM) perceives issues in one of the ignition coils. Problems that may trigger the code include a defective ignition coil, wiring issues, and poor connection.

Which coil is coil F?

Hello and welcome to JA, Ignition coil F is aka the #6 coil. Check cylinder #6, do you have a test light?

Which cylinder is P0354?

Code P0354 indicates that your Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected an issue with the primary or secondary circuit in ignition coil ‘D’ — the coil used on cylinder number 4 (cyl #4) of your engine in a Coil on Plug (COP) ignition system.

What is the code for the ignition coil F?

The P0356 fault code can be defined as Ignition Coil “F” Primary/Secondary Circuit Malfunction. Individual ignition coils are used by the ignition system on the vehicle for each cylinder. Each and every ignition coil is controlled by the engine control module.

What is the code P0354 no 4 cylinder ignition coil circuit malfunction?

What Does the Code P0354 Mean? Code P0354 indicates that your Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected an issue with the primary or secondary circuit in ignition coil ‘D’ — the coil used on cylinder number 4 (cyl #4) of your engine in a Coil on Plug (COP) ignition system.