Code No. P2229: Barometric Pressure Sensor Circuit High Input


FUNCTION



  • The barometric pressure sensor converts the barometric pressure into a voltage signal and inputs the signal to the engine-ECU.
  • In response to the signal, the engine-ECU corrects the fuel injection amount, etc.

TROUBLE JUDGMENT


Check Conditions
  • Battery positive voltage is 8 - 16 V
  • 2 seconds later after the ignition switch has been in "ON" position or the engine has started up
Judgment Criterion
  • The barometric pressure sensor output voltage is 4.80 V or more.

FAIL-SAFE AND BACKUP FUNCTION



  • The EGR control is stopped (fully closed).
  • The throttle valve is opened (Electrical discontinuity).
  • The DPF regeneration is prohibited.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.

PROBABLE CAUSE



  • Failed barometric pressure sensor

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

  • Refer to Data List Reference Table .

  1. Item 5: Barometric pressure sensor

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Replace the engine-ECU.