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 <M/T> or engine-A/T-ECU <A/T>.
  • In response to the signal, the engine-ECU <M/T> or engine-A/T-ECU <A/T> corrects the fuel injection amount, etc.

TROUBLE JUDGMENT


Check Conditions
  • 2 seconds later after the engine has started up.
  • The battery voltage is 8 V or more.
Judgment Criterion
  • The sensor output voltage is 4.5 V or more (Barometric pressure of above 114 kPa or equivalent) for 4 seconds.

PROBABLE CAUSE



  • Failed barometric pressure sensor

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).