OBD Guide

P28A6

Cylinder 6 Ion Current Sense Circuit Low

P28A6 is an OBD-II diagnostic trouble code meaning: Cylinder 6 Ion Current Sense Circuit Low. Common causes: open or short circuit in the sensor circuit, ion current sensor malfunction. Estimated repair cost: $17–56.

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

Symptoms

  • Unstable engine operation
  • Misfire in cylinder 6
  • Increased fuel consumption
  • Reduced engine power
  • Check Engine Light Illuminates

Causes

  • Open or short circuit in the sensor circuit
  • Ion current sensor malfunction
  • Problems with connectors or wiring harness
  • Engine control unit malfunction
  • Poor contact in the circuit

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect connectors and wiring harness
  3. Check the resistance of the ion current sensor
  4. Scan the control unit for other errors
  5. If necessary, replace the sensor or repair the wiring

Related codes

Error P28A6 by Vehicle Brand

FAQ

What does the P28A6 code mean?

P28A6 is an OBD-II diagnostic trouble code that indicates: Cylinder 6 Ion Current Sense Circuit Low

What causes a P28A6 error code?

The most common causes of P28A6 include: Open or short circuit in the sensor circuit; Ion current sensor malfunction; Problems with connectors or wiring harness; Engine control unit malfunction.

How do I fix a P28A6 diagnostic trouble code?

To fix P28A6: Check the integrity of the sensor circuit. Inspect connectors and wiring harness. Check the resistance of the ion current sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P28A6?

Yes, but get it checked soon

How much does it cost to fix P28A6?

The estimated repair cost for P28A6 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat