OBD Guide

P0279

Cylinder 7 Injector A Circuit Low

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

Symptoms

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

Causes

  • Cylinder 7 injector malfunction
  • Open or short circuit in wiring harness
  • Poor contact in the injector connector
  • ECU malfunction
  • Problems with power or grounding of the injector circuit

How to Fix

  1. Check the resistance of the injector of cylinder 7
  2. Inspect the wiring harness and connectors for damage
  3. Check the voltage at the injector
  4. Replace the injector if necessary
  5. Check the operation of the computer

Related codes

Error P0279 by Vehicle Brand