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 JUDGEMENT
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
Judgement 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 turbocharger 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
.
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.