OBD Guide

P28B6

Cylinder 10 Ion Current Sense Circuit Low

P28B6 is an OBD-II diagnostic trouble code meaning: Cylinder 10 Ion Current Sense Circuit Low. Common causes: open or short circuit in the ion current sensor circuit, malfunction of the ion current sensor of the 10th cylinder. Estimated repair cost: $28–89.

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

Symptoms

  • Check Engine light comes on
  • Unstable engine operation
  • Reduced engine power
  • Increased fuel consumption
  • Misfire in cylinder 10

Causes

  • Open or short circuit in the ion current sensor circuit
  • Malfunction of the ion current sensor of the 10th cylinder
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Engine control unit malfunction

How to Fix

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

Related codes

Error P28B6 by Vehicle Brand

FAQ

What does the P28B6 code mean?

P28B6 is an OBD-II diagnostic trouble code that indicates: Cylinder 10 Ion Current Sense Circuit Low

What causes a P28B6 error code?

The most common causes of P28B6 include: Open or short circuit in the ion current sensor circuit; Malfunction of the ion current sensor of the 10th cylinder; Poor contact in the sensor connector; Wiring harness damage.

How do I fix a P28B6 diagnostic trouble code?

To fix P28B6: Check the integrity of the ion current sensor circuit. Inspect connectors and contacts for oxidation 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 P28B6?

Yes, but get it checked soon

How much does it cost to fix P28B6?

The estimated repair cost for P28B6 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat