OBD Guide
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P1268

Cylinder #8 High To Low Side Short

P1268 is an OBD-II diagnostic trouble code meaning: Cylinder #8 High To Low Side Short. Common causes: damage to the wiring harness of cylinder 8, faulty ignition coil. Estimated repair cost: $17–89.

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

Symptoms

  • Misfire in cylinder 8
  • Loss of engine power
  • Increased fuel consumption
  • Unstable idling
  • Check Engine Light Is On

Causes

  • Damage to the wiring harness of cylinder 8
  • Faulty ignition coil
  • Problems with the injector
  • Short circuit in control circuit
  • Engine control unit malfunction

How to Fix

  1. Check the condition of the wiring harness for cylinder 8
  2. Test the ignition coil
  3. Check the functionality of the injector
  4. Diagnose the control circuit
  5. If necessary, replace faulty components

Related codes

P1266P1267P1269

Error P1268 by Vehicle Brand

FordLincolnMercury

FAQ

What does the P1268 code mean?

P1268 is an OBD-II diagnostic trouble code that indicates: Cylinder #8 High To Low Side Short

What causes a P1268 error code?

The most common causes of P1268 include: Damage to the wiring harness of cylinder 8; Faulty ignition coil; Problems with the injector; Short circuit in control circuit.

How do I fix a P1268 diagnostic trouble code?

To fix P1268: Check the condition of the wiring harness for cylinder 8. Test the ignition coil. Check the functionality of the injector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1268?

Limited driving only, diagnose soon

How much does it cost to fix P1268?

The estimated repair cost for P1268 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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