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P1358: Ignition Diagnostic Monitor Signal Out of Self-Test Range

FORD LINCOLN MAZDA MERCURY BUICK CADILLAC CHEVY CHRYSLER
Severity
Medium
System
Manufacturer-Specific Powertrain
Last reviewed: Last updated:

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P1358 Mean?

P1358 is a manufacturer-specific diagnostic trouble code: Ignition Diagnostic Monitor Signal Out of Self-Test Range. This code applies to FORD, LINCOLN, MAZDA, MERCURY, BUICK vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1358

Common Causes

Frequently Asked Questions

What does P1358 mean?
P1358 indicates: Ignition Diagnostic Monitor Signal Out of Self-Test Range. The vehicle's computer has detected that the Ignition Diagnostic Monitor is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P1358?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1358 for extended periods may cause additional problems.
How much does it cost to fix P1358?
Repair costs for P1358 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

  • 🔧 Inspect Ignition Diagnostic Monitor and related wiring
  • 🔧 Replace faulty Ignition Diagnostic Monitor
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P1300 Igniter Circuit Malfunction Bank 1 Or No 1 P1301 Fire Due To Increased Exhaust Temperature P1302 Boost Calibration Low P1303 EGR Calibration Fault P1304 EGR Calibration High P1305 Igniter Circuit Malfunction Bank 2 Or No 2 P1306 Kickdown Relay Pull - In Circuit Fault P1307 Chassis Acceleration Sensor Signal Malfunction P1308 Chassis Acceleration Sensor Signal Low P1309 Chassis Acceleration Sensor Signal High