OBD Guide

P22F7

Cylinder 8 Alternative Fuel Injector Control Circuit High

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Unstable operation of the engine using alternative fuel
  • Automatic switching to the main type of fuel
  • Increased fuel consumption
  • Loss of engine power
  • Check Engine Light Illuminates

Causes

  • Malfunction of the alternative fuel injector of cylinder 8
  • Open or short circuit in control circuit
  • Problems with the injector wiring harness
  • Engine control unit malfunction
  • Poor contact in the injector connectors

How to Fix

  1. Check the resistance of the injector of cylinder 8
  2. Inspect the wiring harness and connectors for damage.
  3. Check the voltage in the injector control circuit
  4. If necessary, replace the faulty injector
  5. Test the engine control unit

Related codes

Error P22F7 by Vehicle Brand