OBD Guide

P1265

Cylinder #5 High To Low Side Short

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

Symptoms

  • Misfire in cylinder 5
  • Uneven engine operation
  • Power Loss
  • Increased fuel consumption
  • Check Engine Light Is On

Causes

  • Damage to the injector wiring harness
  • Fuel injector malfunction
  • Short circuit in control circuit
  • Problems with the engine control unit
  • Contact corrosion

How to Fix

  1. Check the integrity of the injector wiring harness
  2. Measure the injector resistance
  3. Check contacts and connectors
  4. Replace the faulty injector if necessary
  5. Flash or replace the ECU if a malfunction is detected

Related codes

Error P1265 by Vehicle Brand