OBD Guide

P21BE

Cold Start Cylinder 9 Injection Timing

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Unstable engine operation during cold start
  • Increased fuel consumption
  • Difficulty starting in cold weather
  • Engine failures
  • Check Engine Light Illuminates

Causes

  • Malfunction of the fuel injector of cylinder 9
  • Problems with the fuel pump or pressure regulator
  • Dirty or worn injector
  • Malfunction of engine temperature sensors
  • Problems with wiring to the injector

How to Fix

  1. Check the condition of the injector of cylinder 9
  2. Test the pressure in the fuel system
  3. Check the operation of temperature sensors
  4. Inspect the wiring harness to the injector
  5. Clean or replace the nozzle if necessary

Related codes

Error P21BE by Vehicle Brand