P1357 Code - Ignition Diagnostic Monitor Pulsewidth Not Defined
Quick Answer
The P1357 code indicates that the Ignition Diagnostic Monitor (IDM) pulsewidth is not defined for the vehicle's ignition system. Common causes include Faulty Ignition Coil: A faulty ignition coil can lead to irregular pulsewidth signals, triggering the P1357 code, Wiring Issues: Damaged or corroded wiring connections can disrupt the signal between the IDM and ignition system, Faulty IDM Sensor: A malfunctioning IDM sensor can fail to provide the correct pulsewidth information to the vehicle's computer. 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 indicates Ignition Diagnostic Monitor Pulsewidth Not Defined.
- Common causes
- Common causes include Faulty Ignition Coil: A faulty ignition coil can lead to irregular pulsewidth signals, triggering the P1357 code, Wiring Issues: Damaged or corroded wiring connections can disrupt the signal between the IDM and ignition system, Faulty IDM Sensor: A malfunctioning IDM sensor can fail to provide the correct pulsewidth information to the vehicle's computer.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1357 Description
The P1357 code indicates that the Ignition Diagnostic Monitor (IDM) pulsewidth is not defined for the vehicle's ignition system. This issue can have a significant impact on the vehicle's performance, particularly in terms of ignition timing and fuel delivery. The IDM is responsible for monitoring the pulsewidth of the ignition system, which determines the amount of time the ignition coil is energized to produce a spark. When the pulsewidth is not defined, it can lead to misfires, rough idling, poor fuel efficiency, and overall decreased engine performance.
Common Causes of P1357
- Faulty Ignition Coil: A faulty ignition coil can lead to irregular pulsewidth signals, triggering the P1357 code.
- Wiring Issues: Damaged or corroded wiring connections can disrupt the signal between the IDM and ignition system.
- Faulty IDM Sensor: A malfunctioning IDM sensor can fail to provide the correct pulsewidth information to the vehicle's computer.
- ECU Malfunction: A malfunctioning Engine Control Unit (ECU) can misinterpret pulsewidth signals, leading to the P1357 code.
- Ignition System Components: Issues with spark plugs, spark plug wires, or other ignition system components can also contribute to the problem.
Symptoms of P1357
- Misfires: The engine may experience misfires, causing rough idling and a lack of power.
- Poor Fuel Efficiency: The vehicle may consume more fuel than usual due to inefficient ignition timing.
- Engine Performance Issues: The vehicle may exhibit decreased performance, including sluggish acceleration and overall reduced power.
- Check Engine Light: The check engine light may illuminate on the dashboard to indicate a problem with the ignition system.
- Increased Emissions: The vehicle may fail emissions tests due to increased emissions caused by improper ignition timing.
How to Fix P1357
- Diagnose the Issue: Use a scan tool to retrieve the P1357 code and perform a thorough inspection of the ignition system components.
- Check Wiring Connections: Inspect the wiring connections for any damage or corrosion, and repair or replace as necessary.
- Test Ignition Coil: Test the ignition coil for proper functioning and replace if found faulty.
- Replace IDM Sensor: Replace the IDM sensor if it is determined to be malfunctioning.
- Reset ECU: Reset the ECU to clear the code and relearn the correct pulsewidth settings.
Cost to Fix P1357
The typical repair costs for addressing the P1357 code can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. In general, the repair costs for this issue can range from $100 to $500, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, the cost may be higher if the repair involves replacing expensive components such as the ignition coil or ECU.
Need more information about the P1357 code?
Need more information on how to fix the P1357 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1357 code diagnosed by a professional: Find a repair shop in your area
Code P1357 Information for Specific Makes
- P1357 Audi — Ignition Circuit Cylinder 1 Short to Ground
- P1357 BMW — Misfire Cylinder 8 With Fuel Cut-Off
- P1357 Buick — Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 7
- P1357 Cadillac — Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 7
- P1357 Chevrolet — Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 7
- P1357 Ford — Ignition Diagnostic Monitor Pulsewidth Not Defined
- P1357 GMC — Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 7
- P1357 Hyundai — #7 MF Signal Line Open
- P1357 Lincoln — Ignition Diagnostic Monitor Pulsewidth Not Defined
- P1357 Mercury — Ignition Diagnostic Monitor Pulsewidth Not Defined
- P1357 Volkswagen — Ignition Circuit Cylinder 1 Short to Ground
Frequently Asked Questions about P1357 Code
No Frequently Asked Questions about P1357 Code found.
Discuss the causes and fixes for P1357 OBDII Code
Code P1357 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.