OBD Guide

P28BA

Cylinder 11 Ion Current Sense Circuit Low

P28BA is an OBD-II diagnostic trouble code meaning: Cylinder 11 Ion Current Sense Circuit Low. Common causes: open or short circuit in the ion current circuit, malfunction of the ion current sensor of cylinder 11. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine light comes on
  • Uneven engine operation
  • Reduced engine power
  • Increased fuel consumption
  • Possible vibrations at idle

Causes

  • Open or short circuit in the ion current circuit
  • Malfunction of the ion current sensor of cylinder 11
  • Problems with contacts in connectors
  • Engine control unit malfunction
  • Mechanical problems in cylinder 11

How to Fix

  1. Check the integrity of the ion current circuit wiring
  2. Check connections and contacts in connectors
  3. Test the ion current sensor of cylinder 11
  4. Check the operation of the engine control unit
  5. If necessary, replace faulty components

Related codes

Error P28BA by Vehicle Brand

FAQ

What does the P28BA code mean?

P28BA is an OBD-II diagnostic trouble code that indicates: Cylinder 11 Ion Current Sense Circuit Low

What causes a P28BA error code?

The most common causes of P28BA include: Open or short circuit in the ion current circuit; Malfunction of the ion current sensor of cylinder 11; Problems with contacts in connectors; Engine control unit malfunction.

How do I fix a P28BA diagnostic trouble code?

To fix P28BA: Check the integrity of the ion current circuit wiring. Check connections and contacts in connectors. Test the ion current sensor of cylinder 11. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P28BA?

Limited driving only, diagnose soon

How much does it cost to fix P28BA?

The estimated repair cost for P28BA is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat