OBD Guide
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P1357

Ignition Diagnostic Monitor Pulsewidth Not Defined

P1357 is an OBD-II diagnostic trouble code meaning: Ignition Diagnostic Monitor Pulsewidth Not Defined. Common causes: ignition module malfunction, problems in the ignition control circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Power Loss
  • Increased fuel consumption
  • Engine stalls at idle
  • Check Engine light comes on

Causes

  • Ignition module malfunction
  • Problems in the ignition control circuit
  • Broken or shorted wires
  • Ignition coil failure
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the integrity of the wires and connectors of the ignition system
  2. Test the ignition module
  3. Check ignition coil(s)
  4. Diagnose the engine control unit
  5. Replace faulty components

Related codes

P1351P1354P1360

Error P1357 by Vehicle Brand

BMWBuickCadillacChevroletChryslerFordGMGMCLincolnMercuryOldsmobileSaturnVolkswagen

FAQ

What does the P1357 code mean?

P1357 is an OBD-II diagnostic trouble code that indicates: Ignition Diagnostic Monitor Pulsewidth Not Defined

What causes a P1357 error code?

The most common causes of P1357 include: Ignition module malfunction; Problems in the ignition control circuit; Broken or shorted wires; Ignition coil failure.

How do I fix a P1357 diagnostic trouble code?

To fix P1357: Check the integrity of the wires and connectors of the ignition system. Test the ignition module. Check ignition coil(s). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1357?

Limited driving only, diagnose soon

How much does it cost to fix P1357?

The estimated repair cost for P1357 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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