OBD Guide

P0280

Cylinder 7 Injector A Circuit High

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Misfire in cylinder 7
  • Unstable idle
  • Reduced engine power
  • Increased fuel consumption
  • Check Engine Light Illuminates

Causes

  • Cylinder 7 injector malfunction
  • Open or short circuit in the injector wiring harness
  • Poor contact in the injector connector
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the resistance of the injector of cylinder 7
  2. Inspect the wiring harness and injector connectors for damage.
  3. Check the voltage and control signal at the injector
  4. If necessary, replace the injector or repair the wiring harness
  5. Clear error code and test drive

Related codes

Error P0280 by Vehicle Brand