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P1688: Metering Oil Pump Stepping Motor Circuit Malfunction

OTHER CHRYSLER DODGE JEEP PLYMOUTH PONTIAC MAZDA
Severity
Medium
System
Manufacturer-Specific Powertrain

What Does P1688 Mean?

P1688 is a manufacturer-specific diagnostic trouble code: Metering Oil Pump Stepping Motor Circuit Malfunction. This code applies to OTHER, CHRYSLER, DODGE, JEEP, PLYMOUTH 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 P1688

Common Causes

Frequently Asked Questions

What does P1688 mean?
P1688 indicates: Metering Oil Pump Stepping Motor Circuit Malfunction. The vehicle's computer has detected that the Metering Oil Pump Stepping Motor is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P1688?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1688 for extended periods may cause additional problems.
How much does it cost to fix P1688?
Repair costs for P1688 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 and repair Metering Oil Pump Stepping Motor wiring and connectors
  • 🔧 Replace faulty Metering Oil Pump Stepping Motor
  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.

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