AutoCodes – Mercury – P1357 Mercury

P1357 Mercury Code - Ignition Diagnostic Monitor Pulsewidth Not Defined

Quick Answer

P1357 Mercury indicates Ignition Diagnostic Monitor Pulsewidth Not Defined. Common causes include Faulty Pick-up coil or crankshaft position sensor, Faulty 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 Mercury indicates Ignition Diagnostic Monitor Pulsewidth Not Defined.
Common causes: Common causes include Faulty Pick-up coil or crankshaft position sensor, Faulty 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.

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Code Popularity 1,380

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P1357 Mercury Description

OBDII Code P1357 Mercury - Ignition Diagnostic Monitor Pulsewidth Not Defined - AutoCodes.com — P1357 Mercury Code - Ignition Diagnostic Monitor Pulsewidth Not Defined

What does this mean?

What are the Possible Causes of the DTC P1357 Mercury?

Faulty Pick-up coil or crankshaft position sensor
Faulty Ignition Control Module

How to Fix the DTC P1357 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1357 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.