All codes/P28F5

P28F5

Engine Disconnect Clutch Pressure Sensor Circuit Intermittent/Erratic

High severity

The engine disconnect clutch pressure sensor signal drops out or jumps intermittently. Loose connector or noisy ground reference.

The engine disconnect clutch pressure sensor signal drops out or jumps intermittently. Loose connector or noisy ground reference.

Common causes

  • Sensor connector not seated

    One of the most commonly reported causes for this code — check this first.

    high

    Typical part cost: $550-3080

  • Noisy ground reference

    A plausible cause — test and verify before replacing parts.

    medium

    Typical part cost: $550-3080

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First things to check

  1. 1Confirm the code with a scan tool and check for additional related codes.
  2. 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does P28F5 mean?

P28F5 means "Engine Disconnect Clutch Pressure Sensor Circuit Intermittent/Erratic". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.

What are the most common causes of P28F5?

sensor connector not seated; noisy ground reference; connector with intermittent contact under vibration — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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