Engine-CodesFord – P1357 Ford

P1357 Ford Code - Ignition Diagnostic Monitor Pulsewidth Not Defined

Quick Answer

The P1357 Ford code indicates that the Ignition Diagnostic Monitor (IDM) has detected an issue with the pulsewidth not being defined. Common causes include Faulty ignition coils, Damaged wiring or connectors in the ignition system, Malfunctioning ignition control module. 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
P1357 Ford indicates Ignition Diagnostic Monitor Pulsewidth Not Defined.
Common causes
Common causes include Faulty ignition coils, Damaged wiring or connectors in the ignition system, Malfunctioning ignition control module.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1357 Ford Description

The P1357 Ford code indicates that the Ignition Diagnostic Monitor (IDM) has detected an issue with the pulsewidth not being defined. The IDM is responsible for monitoring the ignition system's performance and ensuring that the spark plugs are firing at the correct time. When the pulsewidth is not defined, it means that the IDM is not receiving the proper signal to control the ignition timing effectively. This can lead to misfires, poor engine performance, and potentially cause damage to the catalytic converter over time.

OBDII Code P1357 Ford - Ignition Diagnostic Monitor Pulsewidth Not Defined
P1357 Ford Code - Ignition Diagnostic Monitor Pulsewidth Not Defined

Common Causes of P1357 Ford

  1. Faulty ignition coils
  2. Damaged wiring or connectors in the ignition system
  3. Malfunctioning ignition control module
  4. Issues with the engine's computer system
  5. Poor quality or incompatible spark plugs

Symptoms of P1357 Ford

  1. Engine misfires or rough idling
  2. Decreased fuel efficiency
  3. Loss of power or hesitation during acceleration
  4. Check Engine Light illuminated
  5. Potential damage to the catalytic converter if left unresolved

How to Fix P1357 Ford

  1. Perform a thorough inspection of the ignition system, including checking the ignition coils, wiring, and connectors for any signs of damage or wear.
  2. Test the ignition control module to ensure it is functioning correctly.
  3. Check the engine's computer system for any error codes or malfunctions that could be contributing to the issue.
  4. Replace any faulty components, such as ignition coils or wiring, and reprogram the engine's computer if necessary.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1357 Ford

The cost of repairing a P1357 Ford code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can vary, so it's recommended to get a few quotes from local auto repair shops to determine the most cost-effective option.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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