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All codes/P0028

P0028

Intake Valve Control Solenoid Circuit Range/Performance

Moderate severity

The ECU detected that the bank 2 intake valve oil control solenoid does not respond as expected. Common causes are sludge in the oil passages, a sticking solenoid, or low oil pressure that prevents proper VVT phasing on the intake side.

The ECU detected that the bank 2 intake valve oil control solenoid does not respond as expected. Common causes are sludge in the oil passages, a sticking solenoid, or low oil pressure that prevents proper VVT phasing on the intake side.

Common causes

  • Oil control valve mechanically stuck

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

    high

    Typical part cost: $90-660

  • Sludge or debris in oil passages

    A plausible cause — test and verify before replacing parts.

    medium

    Typical part cost: $90-660

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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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Tools you may need

Already have a compatible scanner? Use it. If not, a Bluetooth OBD2 adapter can help you confirm engine codes and check supported live sensor data before replacing parts.

Illustration of a Bluetooth OBD2 adapter, not a product photo

Basic checks

Veepeak OBDCheck BLE

A Bluetooth LE adapter for reading standard engine codes and supported live data.

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Illustration of a Bluetooth OBD2 adapter, not a product photo

Regular diagnostics

vgate iCar Pro BLE 4.0

A Bluetooth LE adapter with an automatic sleep feature for routine code and sensor checks.

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Illustration of a Bluetooth OBD2 adapter, not a product photo

Another option

OBDLink CX

A Bluetooth LE adapter to consider when comparing supported vehicles and diagnostic apps.

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Illustrations shown, not product photos. Check vehicle, phone and app compatibility before buying. These adapters do not guarantee access to ABS, airbags or manufacturer-specific systems. Clearing a code does not repair the fault and can reset emissions readiness monitors.

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Related codes

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Frequently asked questions

What does P0028 mean?

P0028 means "Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)". It is a generic OBD-II code that points to a fault in the fuel & air metering / auxiliary emission controls.

What are the most common causes of P0028?

oil control valve mechanically stuck; sludge or debris in oil passages; sensor element aged beyond calibration window — 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?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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