OBD Guide

P28AE

Cylinder 8 Ion Current Sense Circuit Low

P28AE is an OBD-II diagnostic trouble code meaning: Cylinder 8 Ion Current Sense Circuit Low. Common causes: malfunction of the ion current sensor of cylinder 8, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Misfire in cylinder 8

Causes

  • Malfunction of the ion current sensor of cylinder 8
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wiring Harness Problems
  • Engine control unit malfunction

How to Fix

  1. Check the integrity of the ion current sensor circuit
  2. Inspect connectors and contacts for corrosion or damage
  3. Check the resistance of the ion current sensor
  4. If necessary, replace the ion current sensor
  5. Check and update the engine control unit firmware

Related codes

Error P28AE by Vehicle Brand

FAQ

What does the P28AE code mean?

P28AE is an OBD-II diagnostic trouble code that indicates: Cylinder 8 Ion Current Sense Circuit Low

What causes a P28AE error code?

The most common causes of P28AE include: Malfunction of the ion current sensor of cylinder 8; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring Harness Problems.

How do I fix a P28AE diagnostic trouble code?

To fix P28AE: Check the integrity of the ion current sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the resistance of the ion current sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P28AE?

Yes, but get it checked soon

How much does it cost to fix P28AE?

The estimated repair cost for P28AE is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat