OBD Guide
ENFRDEESPT

P1028

Intake Manifold Air Control Solenoid Short Open Circuit

P1028 is an OBD-II diagnostic trouble code meaning: Intake Manifold Air Control Solenoid Short Open Circuit. Common causes: open or short circuit in solenoid circuit, air control solenoid malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation at idle
  • Check Engine light comes on
  • The engine goes into emergency mode

Causes

  • Open or short circuit in solenoid circuit
  • Air control solenoid malfunction
  • Wiring harness damage
  • Poor contact in connectors
  • Engine control unit malfunction

How to Fix

  1. Check the continuity of the solenoid circuit
  2. Check solenoid resistance
  3. Inspect connectors and wiring harness for damage
  4. If necessary, replace the solenoid
  5. Check the operation of the system after repair

Related codes

P1027P1029P1030

FAQ

What does the P1028 code mean?

P1028 is an OBD-II diagnostic trouble code that indicates: Intake Manifold Air Control Solenoid Short Open Circuit

What causes a P1028 error code?

The most common causes of P1028 include: Open or short circuit in solenoid circuit; Air control solenoid malfunction; Wiring harness damage; Poor contact in connectors.

How do I fix a P1028 diagnostic trouble code?

To fix P1028: Check the continuity of the solenoid circuit. Check solenoid resistance. Inspect connectors and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1028?

Yes, but get it checked soon

How much does it cost to fix P1028?

The estimated repair cost for P1028 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat