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DTC P2229: Barometric Pressure Circuit High Input
 
 
 
 
TECHNICAL DESCRIPTION
  • The barometric pressure sensor outputs a voltage which corresponds to the barometric pressure.
  • The ECM checks whether this voltage is within a specified range.
 
 
DESCRIPTIONS OF MONITOR METHODS
  • Barometric pressure sensor output voltage is out of reasonable barometric pressure range.
 
 
MONITOR EXECUTION
  • Continuous
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • More than 2 seconds have passed since the power supply mode of the electric motor switch was ON.
  • 12V starter battery positive voltage is 6 volts or higher.
Judgment Criterion
  • Barometric pressure sensor output signal has continued to be more than 113 kPa (33.4 in.Hg) (approximately 4,000 ft below sea level) for 10 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Control as if the barometric pressure is 101 kPa (29.8 in.Hg).
 
 
OBD-II DRIVE CYCLE PATTERN
  • None.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • ECM failed.

 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), read the diagnostic trouble code (DTC).
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
(1) Connect scan tool (M.U.T.-IIISE). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-IIISE) .
(2) Turn on the power supply mode of the electric motor switch.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn off the power supply mode of the electric motor switch.
Is DTC P2229 set?
Replace the ECM (Refer to Removal and Installation ).
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .