P1355 Ford Code - Ignition Coil 'D' Primary Circuit
Quick Answer
The P1355 Ford code indicates a problem with the ignition coil 'D' primary circuit. Common causes include Faulty ignition coil: The most common cause of the P1355 Ford code is a malfunctioning ignition coil 'D', which may have internal wiring or insulation issues, Wiring issues: Problems with the wiring harness connecting the ignition coil to the ECM can also trigger this code, such as damaged wires, loose connections, or corrosion, ECM malfunction: In some cases, a fault in the Engine Control Module (ECM) responsible for controlling the ignition system can lead to issues with the ignition coil 'D' primary circuit. 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
- P1355 Ford indicates Ignition Coil 'D' Primary Circuit.
- Common causes
- Common causes include Faulty ignition coil: The most common cause of the P1355 Ford code is a malfunctioning ignition coil 'D', which may have internal wiring or insulation issues, Wiring issues: Problems with the wiring harness connecting the ignition coil to the ECM can also trigger this code, such as damaged wires, loose connections, or corrosion, ECM malfunction: In some cases, a fault in the Engine Control Module (ECM) responsible for controlling the ignition system can lead to issues with the ignition coil 'D' primary circuit.
- 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.
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Code P1355 Ford Description
The P1355 Ford code indicates a problem with the ignition coil 'D' primary circuit. The ignition coil is a crucial component of the ignition system that generates the high voltage needed to ignite the air-fuel mixture in the engine's cylinders. In this case, the primary circuit refers to the electrical circuit responsible for delivering power to the ignition coil.
Common Causes of P1355 Ford
- Faulty ignition coil: The most common cause of the P1355 Ford code is a malfunctioning ignition coil 'D', which may have internal wiring or insulation issues.
- Wiring issues: Problems with the wiring harness connecting the ignition coil to the ECM can also trigger this code, such as damaged wires, loose connections, or corrosion.
- ECM malfunction: In some cases, a fault in the Engine Control Module (ECM) responsible for controlling the ignition system can lead to issues with the ignition coil 'D' primary circuit.
- Poor electrical grounding: A lack of proper grounding for the ignition coil can cause electrical issues that result in the P1355 code.
Symptoms of P1355 Ford
- Engine misfires: A common symptom associated with a faulty ignition coil is engine misfires, which can manifest as a noticeable lack of power or a rough running engine.
- Rough idling: If the ignition coil 'D' primary circuit is not functioning properly, the engine may experience rough idling or vibrations at idle.
- Decreased fuel efficiency: A malfunctioning ignition coil can lead to incomplete combustion, resulting in decreased fuel efficiency and increased fuel consumption.
- Difficulty starting the engine: A faulty ignition coil can make it difficult to start the engine, causing prolonged cranking or even a no-start condition.
How to Fix P1355 Ford
- Diagnose the issue: The first step in repairing the P1355 Ford code is to perform a thorough diagnosis to pinpoint the exact cause of the problem. This may involve using a scan tool to retrieve the fault codes and testing the ignition coil and related components.
- Replace the ignition coil: If the ignition coil 'D' is found to be faulty, it will need to be replaced with a new one. It is essential to use an OEM or high-quality aftermarket replacement to ensure proper functionality.
- Check and repair wiring: Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace any faulty wiring as needed to ensure a secure connection.
- Test the ECM: If the issue persists after replacing the ignition coil and checking the wiring, it may be necessary to test the ECM for faults or reprogram it to resolve any issues with the ignition system.
- Clear fault codes and test drive: Once the repairs are complete, clear the fault codes from the ECM and test drive the vehicle to confirm that the issue has been resolved.
Cost to Fix P1355 Ford
The cost of repairing the P1355 Ford code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing an ignition coil can range from $100 to $300, while diagnosing and repairing wiring issues may add to the total cost. In total, you can expect to pay anywhere from $150 to $500 for the repair, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to compare prices.
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